. 7. Distance= 3570 m, speed = 100 m/ sec, so calculate the time taken to cover the given
distance.
8. Abus is moving at a speed of 20 m/ sec. How much distance will it cover in1 hour.?
9. 24a + 13b - 4c if a=4, b=-5 and c=2
10. Subtract- 3a- 4b-3c with 4a-5 b-6c
11. What percent is 3 min 20 sec of 4 hrs?
12. Find the value of x- 24:28::x:42
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