Question

if 4/9 of a set of story books cost Rs 630, what will the rest of the set cost?

Answer 1

Step-by-step explanation:

1st method:-

since 4/9 of a set of story books cost.

= 630

=> complete set of of story books cost.

= 630×9/4

= 1417.50

=> cost of rest part= 1417.50 - 630

= 787.50 rupees

second method:-

cost of 4/9 part= 630. ( given)

to find cost of rest part

rest part= 1-4/9= 5/9

therefore cost of rest part.

= 630× 5/9÷ 4/9

= 630× 5/9 × 9/4

= 630×5/4

= 787.50 rupees