Question

A student said that 42% of 78 is 45. Is this answer reasonable? Explain.
WORTH 20 POINTS

Answer 1

42% can round to 40%, and 78 can round to 80. 40% of 80 is 32, so 42% of 78 should be about 32. 45 is much greater than 32, so the answer is not reasonable.

Explanation:

Answer 2

Of course it is
42% of 78 is 45 means that if we consider the 78 as 100% then the percentage of it which will be 45 is 42%.

Mathematically, 42% of 78 =
42% x 78=(42/100)x78=45