1. How many litres of pure acid are there in 8 litres of a 20% solution?

1. 2 litres

2. 1.4 litres

3. 1 litres

4. 1.6 litres

Answer & Explanation

Answer:- 4

Explanation :-

pure acid = 20% of 8 lts

=> ((20/100)*8) lts

=> 1.6 litres.

2. The price of a car is Rs. 3,25,000. It was insured to 85% of its price. The car was damaged completely in an accident and the insurance company paid 90% of the insurance. What was the difference between the price of the car and the amount received ?

1. Rs. 76,375

2. Rs. 34,000

3. Rs. 82,150

4. Rs. 70,000

Answer & Explanation

Answer:- 1

Explanation :-

Price of car =3,25,000

Insurance of car for Rs.=85% of 32500

insurance company paid=90% of Insurance=90% of 85% of 325000

=>(90*100)(85*100)*325000

=>248625

Difference between the price of the car and the amount received=325000-248625=Rs. 76375

3. If number x is 10% less than another number y and y is 10% more than 125, then find out the value of x.

1. 123

2. 122

3. 122.25

4. 123.75

Answer & Explanation

Answer:- 4

Explanation :-

y=125+10 % of 125

y=137.50

x=90% of y

x = y-10% of y

x=137.50-(10/100)*137.50)

x = 137.50-13.75

x= 123.75

4. A housewife saved Rs. 2.50 in buying an item on sale. If she spent Rs. 25 for the item, approximately how much percent she saved in the transaction ?

1. 9%

2. 10%

3. 7%

4. 6%

Answer & Explanation

Answer:- 1

Explanation :-

Actual price = Rs. (25 + 2.50) = Rs. 27.50.

Saving = 2.50

%age of Saving=(2.50/27.50)*100

=>9.09

%age of Saving= 9% approx

5. A pipe X is 30 meters and 45% longer than another pipe Y. find the length of the pipe Y.

1. 20.12

2. 20.68

3. 20

4. 20.5

Answer & Explanation

Answer:- 2

Explanation :-

Y+ 45% of Y=X

Y + 45% of Y=30

Y+(45/100)Y=30

(145/100)Y=30

Y=(30*100)/145

Y=20.68