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

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