Question

If the cost of 30 packets of 8 pencils each is Rs 600, what is the cost of 25 packets of 12 pencils each?
(a) Rs 725
(b) Rs 750
(c) Rs 480
(d) Rs 720

Answer 1

(b) Rs 750
Cost of 30 packets of 8 pencils each = Rs 600
Cost of 1 packet of 8 pencils = 600 = Rs 20
30
Cost of 1 pencil = Rs 20
8
Cost of 1 packet of 12 pencils = 12​ × 20 = 240 = Rs 30
8 8
Cost of 25 packets of 12 pencils each = 25 × 30 = Rs 750