80% is sames as 4/5. 42.84% is 3/7. It is very vital to know all the stadard percentages and develop a "feel" for percentage numbers

1. Percentages

2. Percentages
A earns 25% more than B. C earns 25% more than A. A earns 20%
more than D. E earns 20% more than A. A, B, C, D, and E earn integer
amounts less than Rs. 100. What is the total amount earned by all
five of them put together?
(a) Rs. 300 (b) Rs. 245
(c) Rs. 305 (d) Rs. 480

3. Percentages
A =
5
4
x B or, B =
4
5
x A
C =
5
4
x A,
A =
6
5
x D, or D =
5
6
x A,
E =
6
5
x A
A earns 25% more than B. C earns 25% more than A. A earns 20%
more than D. E earns 20% more than A. A, B, C, D, and E earn integer
amounts less than Rs. 100. What is the total amount earned by all
five of them put together?

4. Percentages
In order for the amounts earned by A, B, C, D and E to be integers,
the amount earned by A should be a multiple of 4, 5 and 6. Or, the
amount earned by A should be a multiple of 60. The only multiple of
60 that is a 2–digit number is 60.
So, if A earns Rs. 60, B should earn Rs. 48. C should earn Rs. 75, D
should earn Rs. 50 and E should earn Rs. 72.
A earns 25% more than B. C earns 25% more than A. A earns 20%
more than D. E earns 20% more than A. A, B, C, D, and E earn integer
amounts less than Rs. 100. What is the total amount earned by all
five of them put together?

5. Percentages
The total income earned by all 5 of them should be equal to
Rs. 60 + Rs. 48 + Rs. 75 + Rs. 50 + Rs. 72 = Rs. 305.
Answer Choice (c)
A earns 25% more than B. C earns 25% more than A. A earns 20%
more than D. E earns 20% more than A. A, B, C, D, and E earn integer
amounts less than Rs. 100. What is the total amount earned by all
five of them put together?

6. For lots more CAT Level Questions, visit
online.2iim.com