Question

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Answer 1

Answer:

Here is all your answer.

Step-by-step explanation:

39.) Total student = 1800

No. of Girls = 600

No. of Boys = (1800 - 600) = 800

Ratio of Boys to all student = 800:1800 = 4:9

40.) Let the money given to Ram and Shayam be 3x and 2x respectively.

Now, 3x + 2x = 20

=> 5x = 20

=> x = 20/5

=> x = 4

Ram = 3 × 4 = Rs.12

Shyam = 2 × 4 = Rs.8

41.) 10 bananas cost Rs.20

7 bananas cost = (20 × 7)/10

= Rs.14

42.) 30:45 and 60:100

2:3 and 2:5

Hence both ratios are not equal.

43.) Cost of 3 dozen pens (36) = Rs.72

Cost of 2 dozen pens (24) = Rs.(72 × 24)/72

= Rs.48

44.) 1000 bulbs per month.

50 bulbs defective on a certain month.

Ratio of defective bulb to bulbs produced

= 50:1000 = 1:20

45.) 8 packet matchboxes contains 640 matchsticks

No. of matchsticks in 800 match boxes

= (640 × 800)/8 = 64000 matchsticks.

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