The following bar chart shows the number of pens (in '000s) sold by 6 different shops during a given year.
If the cost of each pen is ₹4.50, then what is the average revenue earned per shop?
A bag contains coins of ₹1, ₹2 and ₹5 in the ratio 5 : 10 : 6 respectively. The total amount in the bag is ₹275. How many ₹5 coins are in the bag?
The simple interest on a sum deposited at 10% p.a. for 4 years is ₹20,000. What will be the compound interest on the same sum at half of the above rate of interest for 2 years, interest compounded yearly?