PE 2 - Percentage | Arithmetic - Percentage
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Mr. Manoj saves 30% of his salary every month. But in April, his expenses increase by 20% of his original expenses and he saves $280 less than the amount he saves normally. What is his salary?
- (a)
$2000
- (b)
$1500
- (c)
$2400
- (d)
$3000
- (e)
$1550
Solution
Discuss
ReportIn every box of 120 bulbs, 5% are defective. If a company needs 4,000 non-defective bulbs, what is the minimum number of boxes that it has to purchase?
- (a)
32
- (b)
34
- (c)
35
- (d)
36
- (e)
None of these
Gurmeet purchased a box of chocolates. She ate 20% of them and gave 25% of the remaining chocolates to her friends. Of the remaining chocolates, she ate 20% of it and gave 25% of the remaining chocolates to her friends. Then, she gave 20 chocolates to a guest. Finally, she is left with 35% of the chocolates that she initially had. How many chocolates did Gurmeet eat?
- (a)
320
- (b)
500
- (c)
640
- (d)
1250
It is given that k = x2 - 2x. If x is doubled, what is the percentage change in k?
- (a)
100%
- (b)
200%
- (c)
121%
- (d)
0%
- (e)
Cannot be determined
The cost of an air ticket is fare of Rs. 2,000 plus tax. If a discount of 50% is allowed on the fare of the air ticket (not tax), the total cost of the ticket decreases by 40%. What is the amount of tax charged on the purchase of a ticket?
- (a)
Rs. 400
- (b)
Rs. 1000
- (c)
Rs. 500
- (d)
Rs. 800
- (e)
Cannot be determined
Hitesh said to Rohit, if you give me 10% of your pocket money, I will have 100% more than what you will be left with. By how much percent is Hitesh's pocket money more than Rohit's?
- (a)
80%
- (b)
40%
- (c)
50%
- (d)
70%
- (e)
60%
Two friends x and y have some money with them. ‘x’ gives 40% of his money to ‘y’ and ‘y’ gives 16.67% of the money he now has to ‘x’. Both the friends have the same amounts of money now. If M and N respectively are the amounts of money with ‘x’ and ‘y’ at the beginning, then
- (a)
M = N
- (b)
M > N
- (c)
M < N
- (d)
M + N = 600
- (e)
None of these
There are 150 students in a class and 60% of them are girls. 60% of the girls in the class have not studied Math. Taking the class as a whole, 50% of the students have not studied Math. What percentage of boys in the class have studied Math?
- (a)
65%
- (b)
50%
- (c)
40%
- (d)
30%
- (e)
None of these
If a quantity is decreased by 30% and then increased by 50%, by how much percentage does it have to be decreased to bring it back to the original quantity?
- (a)
4.76%
- (b)
5.85%
- (c)
1.33%
- (d)
9.5%
- (e)
20%