1. On my sister’s 15th birthday, she was 159 cm in height, having grown 6% since the year before. How tall was she the previous year?

1. 150 cm

2. 140 cm

3. 142 cm

4. 154 c

Answer & Explanation

Answer:- 1

Explanation :-

let the age of my sister in previous year =x

159=x+6% of x

159=x+((6/100)*x)

159=(106/100)x

x=(159*100)/106

x=150 cm

2. Anil gives his 35% of the money to his wife and gave 50% of the money to his sons. Remaining amount of Rs 11,250/- he kept with himself. What was total money he had?

(1) Rs 75,000

(2) Rs 70,000

(3) Rs 80,000

(4) Rs 85,000

(5) None of these

Answer & Explanation

Answer:- 1

Explanation :-

Anil gave money to his wifeand son =(35%+50%)=85% of the total money

remaining money =(100-85)%=15%

remaining money=11,250

Therefore,

15% of the total money =11250

total money = (11250*100)/15

total money= Rs. 75000

3. If the price of petrol increases by 25% and Benson intends to spend only an additional 15% on petrol, by how much % will he reduce the quantity of petrol purchased?

1. 8%

2. 7%

3. 10%

4. 6%

Answer & Explanation

Answer:- 1

Explanation :-

Suppose petrol Used=100ltrs

petrol price=100rs

total cost =100*100

Price incresed (25%)=125

Petrol used=10000/125=80 ltrs

He increased only 15% so that

=> 80*115/100

=>92%

Therefore

Reduced Quantity=(100-92)%=8%

4. Arun got 30% of the maximum marks in an examination and failed by 10 marks. However, Sujith who took the same examination got 40% of the total marks and got 15 marks more than the passing marks. What were the passing marks in the examination?

1. 90

2. 250

3. 75

4. 85

Answer & Explanation

Answer:- 4

Explanation :-

Arun got 30% marks

Sujith got 40% Marks

Difference between their marks =10%of total marks =(10+15)=25 marks

Arun got marks=(25/10)*30=75

Passing marks =75+10=85

5 . 30% of the men are more than 25 years old and 80% of the men are less than or equal to 50 years old. 20% of all men play football. If 20% of the men above the age of 50 play football, what percentage of the football players are less than or equal to 50 years?

1. 60%

2. 70%

3. 80%

4. 90%

Answer & Explanation

Answer:- 3

Explanation :-

Men are above the age of 50 years=20%

20% of these men play football.

Therefore,

20% of 20% = (20/100)*20

=>4% of the total men are football players above the age of 50 years.

20% of the men are football players. Therefore, 16% ie (20-4) % of the men are football players below the age of 50 years.

Therefore, the % of men who are football players and below the age of 50

=>(16/20)*100=80%