Question

If 60 % of a number is 15, then 40 % of the number is?​

Answer 1

Answer:

10

Step-by-step explanation:

60/100=15

40/100=x

cross multiply.

60x/100=40(15)/100

(100 will get cancelled on both sides)

60x=40(15)

x=40(15)/60

x=4(15)/6

x=4(5)/2

x=2(5)

x=10

Answer 2

Let the number be x,

Then,

$60\% \: \: of \: x \: = 15 \\ \frac{60}{100} \times x = 15 \\ x = \frac{15 \times 100}{60} \\ x = 25$

So, the number is 25.

Also,

$40\% \: \: of \: 25 \\ \frac{40}{100} \times 25 = 10$