Q180
ArithmeticRatio, Proportion & Mixtures
The wages of labourers in factory has increased in the ratio 22:25 and their number decreased in the ratio 3 : 2. What was the original wages bill of the factory if the present bill is ₹ 5,000?
- a.₹ 4,000
- b.₹ 6,000
- c.₹ 8,000
- d.₹ 6,600
Answer: (D) ₹ 6,600
The bill is wage × number, so it changes in the ratio (22 × 3) : (25 × 2) = 66 : 50. Original bill = 5000 × $\frac{66}{50}$ = ₹ 6,600. The other figures do not fit this 66 : 50 change.