12 Questions

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- Question 1 :
If 40% of a number is 200,find the number

- A200
- B400
- C500
- D700
**Explanation:**(200/40)*100=500

- Question 2 :
When 40 is added to 20% of a number,same number is obtained.Find the number

- A20
- B30
- C50
- D60
**Explanation:**40/(100-20)*100=50

- Question 3 :
When 300% of a number is 120 ,find 150% of that number

- A50
- B60
- C70
- D80
**Explanation:**(120/300)*150=60

- Question 4 :
When Raman sold a radio for Rs 600,40% loss occurred.Find the S.P if he wants a gain of 20%.

- A1000
- B3000
- C2000
- D1200
**Explanation:**C.P=(600*100)/60=1000

Gain%=20%

S.P=(1000*120)/100=1200

- Question 5 :
Raju bought a shirt with 15% discount.Had he bought the shirt without discount,he would have paid Rs 60 more.Find CP of the shirt

- A400
- B340
- C360
- D480
**Explanation:**CP=60*(85/15)=Rs 360

- Question 6 :
Ramesh’s income is more than Mahesh’s income by 20%.Then by how much percentage Mahesh’s income less than Ramesh’s income?

- A25%
- B15%
- C16.66%
- D12%
**Explanation:**[20/(100+20)]*100=(20/120)*100=100/6=16.66%

- Question 7 :
The income of Anand is 25% less than income of Balu.Then by what percentage income of balu more than Anand.

- A20%
- B25%
- C33.33%
- D40%
**Explanation:**[25/(100-25)]*100=(25/75)*100=100/3=33.33%

- Question 8 :
If a number is increased by 40% and decreased by 40%,what will be the result?

- A20% increase
- B20% decrease
- C16% increase
- D16% decrease
**Explanation:**40-40-(40*40)/100=-16%,16% decrease

- Question 9 :
A man sold 2 mobile phones at the rate of 1500Rs each.If he gets a profit of 20% in one transaction and a loss of 20% in another transaction,find by what percent he lost or gained in the whole.

- A4% increase
- B4% decrease
- C1% increase
- D1% decrease
**Explanation:**20-20-(20*20)/100=4% decrease

- Question 10 :
If length of a rectangle is increased by20% and breadth decreased by 10%,find change in area

- A11% increase
- B10% decrease
- C8% increase
- D8% decrease
**Explanation:**20-10-(20*10)/100=10-2=8% increase

- Question 11 :
There are 500 students in a hostel.Of these,20% drink coffee.50% drink tea.10% drink both.Find the number of students who drink neither

- A100
- B200
- C300
- D400
**Explanation:**100-(20+50-10)=40%

Number=500*(40/100)=200

- Question 12 :
There are 1000 people in a flat.40% read Malayalam Newspaper,20% read English,10% read both.Find the number of persons who read neither

- A1000
- B300
- C500
- D700
**Explanation:**100-(40+20-10)=50%

Number=50% of1000=500