Direct and Inverse Proportion Two Marks Questions

7th Standard EM

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Maths

Time : 00:45:00 Hrs
Total Marks : 30
15 x 2 = 30
1. A birthday party is arranged in third floor of a hotel. 120 people take 8 trips in a lift to go to the party hall. If 12 trips were made how many people would have attended the party?

2. If half a meter of cloth costs Rs.15. Find the cost of 8$\frac {1}{3}$ meters of the same cloth.

3. The weight of 72 books is 9kg. what is the weight of 40 such books? (using unitary method)

4. Valli purchases 10 pens for Rs.180 and Kamala buys 8 pens for Rs.96. Can you say who bought the pen cheaper? (using unitary method)

5. A motorbike requires 2 litres of petrol to cover 100 kilometers. How many litres of petrol will be required to cover 250 kilometers? (using unitary method)

6. If the cost of 7kg of onions is Rs.84 find the following
(i) Weight of the onions bought for Rs.180
(ii) The cost of 3 kg of onions

7. A printer, prints a book of 300 pages at the rate of 30 pages per minute. Then, how long will it take to print the same book if the speed of the printer is 25 pages per minute?

8. If the cost of 6 cans of juice is Rs.210, then what will be the cost of 4 cans of juice?

9. A truck requires 108 liters of diesel for covering a distance of 594km. How much diesel will be required to cover a distance of 1650km?

10. If the cost of a dozen soaps is Rs.396, what will be the cost of 35 such soaps?

11. Cost of 105 notebooks is Rs.2415. How many notebooks can be bought for Rs.1863?

12. Six men can complete a work in 12 days. Two days later, 6 more men joined them. How many days will they take to complete the remaining work?

13. The amount of extension in an elastic spring varies directly as the weight hung on it. If a weight of 150gm produces an extension of 2.9 em, then what weight would produce an extension of 17.4 cm?

14. Reeta types 540 words during half on hour. How many words would she type in 12 minutes?

15. A call taxi charges Rs.130 for 100 km. How much would one travel for Rs. 390?