Question

70% of a money is rupees 84 what is 20% of the money

Answer 1

$let \: the \: total \: money = > x \\ 70\%of \: x = 84 \\ \frac{70}{100} \times x = 84 \\ 70x = 84 \times 100 \\ 70x = 8400 \\ x = \frac{8400}{70} \\ x = 120 \\ = > total \: money \: = 120$
$20\% \: of \: 120 \\ \frac{20}{100} \times 120 \\ = 24$

Answer 2

let total money be = x

70/100 =84

70 = 84×100

70=8400

8400/70

120

the total money is = 120

20% = 120

20/100=120

24

20 percent is 24