Question

if a is 25 % greater than b then b is what % smaller than a

Answer 1

So, a = b + 25% of b
=> a = b + b/4 = 5b/4

Now, (a-b)/b × 100
=(5b/4 - b)/b × 100
=(b/4)/b × 100
= 25%
Thus, b is 25% smaller than a.