Estimate 30% of Rs 375.50

Estimate 20% of ₹ 357.30

Estimate 15% of ₹375.50

30% of 40 =

Express the ratio in it's simplest form :- Rs. 7.50 : Rs. 10

Rubina went to a bank to withdraw Rs. 2000. She asked the cashier to give the cash in Rs. 50 and Rs. 100 notes only. She got 25 notes in all. Can you tell how many notes each of Rs. 50 and Rs. 100 she received?

A vessel of volume V = 5.0 litre contains 1.4 gm of nitrogen at temperature T = 1800 K. Find the pressure of the gas if 30% of its molecule are dissociated into atom at this temperature.