Question

find the whole quantity if 40% of it is 500 km

Answer 1

let the whole quantity be x

so , 40 % of x = 500

40/100 × x = 500

x = 500 × 10 /4

x = 1250 km

Answer 2

Let the unknown quantity be x.

40% = 40/100

40/100*x = 500

40x = 500*100

40x = 50000

x = 50000/40

x = 1250km

Hope it helps :)