Multiple choice

A work completed by 120 labourers in 15 days. How many labourers will complete the same work in 10 days?

  1. 150

  2. 180

  3. 200

  4. 210

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Work and laborers are inversely proportional to time (more laborers = less time). 120 laborers × 15 days = 1800 laborer-days. For 10 days: 1800 ÷ 10 = 180 laborers needed.