A shopkeeper has bought 1 kg of apples for ₹100. And sold it for ₹120 per kg. What is the percentage of profit gained by the shopkeeper.
Find:
(a) 35 − (20) (b) 72 − (90)
(c) (− 15) − (− 18) (d) (− 20) − (13)
(e) 23 − (− 12) (f) (− 32) − (− 40)