Question

40% of what number is 68?

Answer 1

0.40% of a number is 68
40% of n = 68

40% = $\frac{40}{100}$ = 0.4

0.4 × n = 68

$\frac{0.4n}{0.4}$ = $\frac{68}{0.4}$
n = 170

40% of 170 is 68

Answer 2

0.4 * x = 68
x = 68/0.4
x = 170

check:

0.4 * 170 = 68