The daily wages of a worker are Rs. 100. Five workers can do a work in 10 days. If you pay Rs. 20 more daily, they agree to do 25% more work daily. If the proposal is accepted, then the total amount that could be saved is
(a) Rs. 200
(b) Rs. 250
(c) Rs. 300
(d) Rs. 500
Sol:
x = 8 ⇒ total time taken
5 × 100 × 10 → total investment initially
8 × 120 × 5 → total investment finally
Money saved = 200
