Question

7) If 15 workers can build a wall in 48 hours.
how many workers will be required to do the
same work in 30 hours?

find answer with table
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Answer 1

Answer:

When h = 48, w = 15. So, the equation of variation is hw = 720. Thus, the number of workers required to do the same work in 30 hours is 24.

Answer 2

Step-by-step explanation:

no.of workers : 15 x

hours to complete: 48 30

it is an inverse proportion

x × y = k

15 × 48 =x ×30

x = 15 × 48÷ 30 = 24 workers