Question

Answer all the questions.

28. Factorize (x+y)(3x-7) – (x+y)(2x-11)

29. Harsh takes 150 steps in walking a distance of 125 metres. What would he

cover in 360 steps?

30. pumps can empty a reservoir in 18 hours. In how many hours can 42 such

pumps do the same work?

31. Two parallel sides of a trapezium are 85 cm and 63 cm and its area is 2664

sq.cm. find its altitude.

32. The area of a trapezium is 210 sq.m and its height is 14 m. If one of the

parallel sides is double that of the other, find the two parallel sides.​

Answer 1

Step-by-step explanation:

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