Q.1
30% of 28% of 480 is the same as
Q.2
To meet a government requirement, a bottler must test 5 percent of its spring water and 10 percent of its sparkling water for purity. If a customer ordered 120 cases of spring water and 80 cases of sparkling water, then what percent of all the cases must the bottler test before he can send it out ?
Q.3
A 14.4 kg gas cylinder runs for 104 hours when the smaller burner on the gas stove is fully opened while it runs for 80 hours when the larger burner on the gas stove is fully opened. Which of these value is the closest to the percentage difference in the usage of gas per hour, of the smaller burner over the larger burner ?
Q.4
A toy merchant announces 25% rebate in prices of balls. If one needs to have a rebate of Rs. 40, then how many balls each costing Rs. 32, he should purchase ?
Q.5
On a test consisting of 250 questions, Jassi answered 40% of the first 125 questions correctly. What percent of the other 125 questions does she need to answer correctly for her grade on the entire exam to be 60% ?
Q.6
If the price of a book is first decreased by 25% and then increased by 20%, then the net charges in the price will be :
Q.7
The current birth rate per thousand is 32, whereas the corresponding death rate is 11 per thousand. The net growth rate in terms of population increase in percent is given by :
Q.8
One-eighth of a number is 41.5. What will 69% of that number be ?
Q.9
A company pays rent of Rs. 25000 per month for office space to its owner. But if the company pays the annual rent at the beginning of the year the owner gives a discount of 5% on the total annual rent. What is the annual amount the company pays to the owner after the discount ?
Q.10
If a = b × $$\frac{{d}}{{c}}$$; b, c and d are increased by 10%, then by how much does a increase ?
Q.11
Find the value :
3.2% of 500 × 2.4% of ? = 288
Q.12
Vinay decided to donate 5% of his salary. On the day of donation he changed his mind and donated Rs. 1687.50, which was 75% of what he had decided earlier. How much is Vinay's salary ?
Q.13
A reduction of 21% in the price of wheat enables a person to buy 10.5 kg more for Rs. 100. What is the reduced price per kg ?
Q.14
If X is 90% of Y, then what percent of X is Y ?
Q.15
30% apples out of 450 are rotten, How many apples are in good condition ?
Q.16
Solve this :
(0.56% of 225) × (3.25% of 430) = ?
Q.17
An interval of 3 hours 40 minutes is wrongly estimated as 3 hours 45.5 minutes. The error percentage is :
Q.18
A number increased by $$37\frac{1}{2}$$ % gives 33. The number is :
Q.19
Kamal has 160 toffees. He gave 5% toffees to Ravi, 15% toffees to Anita and one-fourth of the toffees to Gagan. How many toffees are left with Kamal after the distribution ?
Q.20
If a is 60% of b, then what percent of 4a is 5b ?
Q.21
76% of the students in a school are boys. If the number of girls is 204, then the total number of students is :
Q.22
1100 boys and 700 girls are examined in a test; 42% of the boys and 30% of the girls pass. The percentage of the total who failed is :
Q.23
If a number is reduced by 40% it becomes two-thirds of another number. What is the ratio of the first number to the second number ?
Q.24
The price of a certain item is increased by 15%. If consumer wants to keeps his expenditure on the item same as before, how much percent must he reduce his consumption of that item ?
Q.25
The difference between 38% of a number and 24% of the same number is Rs. 135.10. What is 40% of that number ?
Q.26
Solve this :
(0.85% of 405) + (2.25% of 550) = ?
Q.27
An alloy of gold and silver weight 50 g. It contains 80% gold. How much gold should be added to the alloy so that percentage of gold is increased to 90 ?
Q.28
60% of 264 is the same as :
Q.29
The number which exceeds 16% of it by 42 is :
Q.30
One litre of water is evaporated from a 6 litre solution containing 4% sugar. The percentage of sugar in the remaining solution is :
0 h : 0 m : 1 s