# PROBLEMS ON PERCENTAGE-HOW TO SERIES

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# PROBLEMS ON PERCENTAGE-HOW TO SERIES

Hi Bankersdaily Aspirants,

Feeling good to see you all again,I know all were curiously preparing for IBPS RRB Exam which is going to be held with in 10 days.As of now we should practice different & difficult Question to increase our Calculation Speed & Accuracy.Aspirants today I am here to discuss some of the problems based on Percentages.

### INTRODUCTION:

The Questions from the Percentage topic will not be difficult & if they want to trick then they will increase number of lines in the question to increase the time by just studying the question.Today we are going to discuss some of the topics in Percentage.

1)BASED ON VENN DIAGRAM

2)BASED ON CONSUMPTION

3)PERCENTAGE COMBINED WITH RATIO

## #.1.TYPE 1:

### BASED ON VENN DIAGRAM:

**1)In a Team,totally there were 100 Employee they were working in 2 team namely Coding Team & Testing Team.The Total Female Employee is 38% of the total number of Employee.The number of Female Employee in the Coding team is twice the employee in the Testing team .The Male Employee in coding team is equal to the number of women working in coding team & number of women & male employee working together in coding & Testing Team,The number of Male Employee working in both the team is 1 less then the women working in both the Team & there were 8 Women who works in both Team.Find the number of Male Employee in the Testing team.**

Given that,

The number of Female Employee is 38 % of the Total Employee.

## PRACTICE THIS SUM:

**1)There were 150 Students in the class,The boys in the class is 40% of the total number of the students.Girls who know only Tamil in the class is 30% of the total number of the students in the class.The number of boys who know English is 10 which is equal to number of Boys who knows both English & Tamil.The Girls who know both Tamil & English is 5 more than the boys who knows Tamil & English.Find the number of girls who knows only English?**

**2)There were two sections in the Prelims exam.As you all know there will be 80 questions.The number of questions Attended by girl in the reasoning Section is 25% of the total number of questions.The number of questions attended by boy in both section is same(Aptitude=Reasoning) .The Aptitude Question attended by girl is 60% of the number of questions attended by girl in Reasoning Section,which is equal to number of questions attended by both girl & boy in both the sections.Find the number of Question attended by Boys in Reasoning Section?**

## #.2.TYPE 2:

### BASED ON CONSUMPTION:

**1)When the Price of the Cereals increased by 50%,a family reduced its consumption .In such a way that the expenditure on Cereals was only 20% more than before.If 5 kg were consumed per month before,find the new monthly consumption?**

Given that,

Let the Initial Price of the Cereals is 100

Then,the Price increased by 50%,the Price of the Cereals is Rs.150.

Then given that the family takes 5 Kg each month,

Therefore they Spend Rs.500 Per month

After increasing the price the Family reduces its consumption therefore the Expenditure increases by 20%

Therefore they Spend Rs.600 Per month

Therefore,they consumed=600/150=**4 Kg**

### PRACTICE THIS SUM:

**1)When the price of the coffee was increased by 60%,a family reduced its consumption in such a way that the expenditure on coffee was only 20% more than before.If 80 kg were consumed per month before,find the new monthly consumption?**

**2)When the Price of the fruits increased by 80%,Aadvik reduced his consumption in such a way that the expenditure on fruits was only 20% more than before.If 30 kg was consumed by him,in 2 months find the new consumption?**

**3)When the Price of the cosmetics increased by 50%,Akshara reduced his consumption in such a way that the expenditure on cosmetics was only 10% more than before.Assume She usually buy 30 brands,Find how many brands she bought after increasing the price?**

## #.3. TYPE 3:

### PERCENTAGE COMBINED WITH RATIO:

**1)Marks of the 2 friends Ajith & Ajeesh are in the ratio 3:5.Ajith’s weight increases by 20% and the total Marks of Ajith & Ajeesh together becomes 80,with an increase of 25%.by what percent did the marks of Ajeesh increase?**

Let the Marks be,

Ajith=3x; Ajeesh =5x

Given that Ajith increases his mark by 20%,there by the mark becomes 80

Therefore,

**(3x*120)/100+Ajeesh Mark=80**

Given that,after increasing the total mark increases by 25%

Therefore,

3x+5x=8x

**8x*125/100=80**

By solving the above equation we get

**x=8**

Sub X=8 in **(3x*120)/100+Ajeesh Mark=80**

Ajeesh Mark=80-28.8=51.2 Kg

% increase in Ajeesh Mark=(51.2-40/40 )*100

**=28%**

### PRACTICE THIS SUM:

**1)Weights of two friends Ram & Shyam are in the ratio of 4:5.Ram’s weight increase by 10% and the total weight of Ram & Shyam together becomes 82.8 kg,with an increase of 15%.By what percent did the weight of Shyam increase?**

**2)Height of two girl child Janvi & Manvi are in the ratio 1:2.Janvi’s height increases by 20% and the total height of Janvi & Manvi together becomes 60 cm,with an increase of 30%.By what percent did the weight of Manvi increase?**

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## 2 comments

Please provide the explanation for 2nd question under venn diagram

Hi Mam,

Happy to see your Comment after a long time.

Answer:Number of Questions Attended by Boys:

Aptitude=18

Reasoning=18

Number of Questions Attended by Girls:

Aptitude=12

Reasoning=20

Number of Questions Attended in both the Section:

Boys=5

Girls=7

Explanation:Given that the number of Questions Attended by Girls in Reasoning Section=25% of 80=20Questions

Aptitude Questions is attended by girl is 60% of Reasoning(Girls)=60% of 20=12 Questions

This is equal to number in Both the Section=12

so Remaining Question from 80 is (20+12+12)=44

80-44=36Since the boy attend same questions in each section therefore 36/2 =18 Questions