15 workers build a wall in 48 hours. To finish in 30 hours you need:

Question

Accepted Answer

C. 24 workers

1. Hours and workers vary inversely.
2. 48 times 15 equals 30 times y.
3. y is 24 workers.
_Source: syllabus Mathematics, Chapter 13, Direct and Inverse Proportions._

Answer

30 workers

Answer

9 workers

Answer

20 workers

15 workers build a wall in 48 hours. To finish in 30 hours you need:

Keep practising Ratio and Proportion