class Vlll Comparing Quantities

 Comparing Quantities

1. If Chameli had Rs 600 left after spending 75% of her money, how much did she have in the beginning? 

2.Convert the following ratios to percentages. (a) 3 : 4 

3.  A shopkeeper purchased 200 bulbs for Rs10 each. However 5 bulbs were fused and had to be thrown away. The remaining were sold at ` 12 each. Find the gain or loss %.?

4. The cost of an article was Rs15,500. Rs 450 were spent on its repairs. If it is sold for a profit of 15%, find the selling price of the article.

5. A VCR and TV were bought for ` 8,000 each. The shopkeeper made a loss of 4% on the VCR and a profit of 8% on the TV. Find the gain or loss percent on the whole transaction.

6. A milkman sold two of his buffaloes for ` 20,000 each. On one he made a gain of 5% and on the other a loss of 10%. Find his overall gain or loss.

7. An article was purchased for ` 1239 including GST of 18%. Find the price of the article before GST was added?

8. Kamala borrowed Rs 26,400 from a Bank to buy a scooter at a rate of 15% p.a. compounded yearly. What amount will she pay at the end of 2 years and 4 months to clear the loan?

9. Maria invested Rs 8,000 in a business. She would be paid interest at 5% per annum compounded annually. Find

 (i) The amount credited against her name at the end of the second year. 

(ii) The interest for the 3rd year.

10. The population of a place increased to 54,000 in 2003 at a rate of 5% per annum 

(i) find the population in 2001.

 (ii) what would be its population in 2005? 

11. In a Laboratory, the count of bacteria in a certain experiment was increasing at the rate of 2.5% per hour. Find the bacteria at the end of 2 hours if the count was initially 5, 06,000. 

12. A scooter was bought at Rs 42,000. Its value depreciated at the rate of 8% per annum. Find its value after one year.