book Maths Puzzle Numerical Ability

What is 25% more thank 28?
My answer was 35. Is that right?
Thanks

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book Other Question

what is 20% of 625.57
The answer would be 125.114, but the way you solve it is by muliplying 625.57 by .20 (which is 20% with the decimal moved two places to the left). Each of three colleges sent one male and one female student to a conference. How many was can the 6 students be seated in a row of 6 chairs if students from the same school must be seated next to each other?