If 3/4 of a number is 15, 4/5 of the number is 16
Word problem are mathematical problems put in words. To solve , we must interprete back to mathematical equation.
To calculate 4/5 of the number , we need to know the number.
Represent the number by x
3/4 of x = 15
3x = 15 × 4
3x = 60
x = 20
Therefore four fifth of the number will be
20 × 4/5
= 4 × 4
= 16
Therefore four fifth of the number is 16