Question

8. Divide :
(i) 84 in the ratio 5:7
(ii) 450 g in the ratio 5:4
(iii) A length of 1 m 71 cm in the ratio
11:8
(iv) 3 litres in the ratio 1:2:3​

Answer 1

Step-by-step explanation:

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Answer 2

1)ratio = 5:7

total = 12x

12x = 84

x=7

5x= 5*7 = 35

7x = 7*7 = 49

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2)Ratio = 5:4

Sum of the ratios = 5 + 4 = 9 parts

9 parts = 450 g

1 part = 450 / 9 = 50 g

Therefore,

5 parts = 5 x 50g = 250 g

4 parts = 4 x 50g = 200 g

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3)Total length= 171 cm Required ratio= 11:8

Let 11x and 8x be the required lengths. Then, 11x+8x=171

19x=171

x=9

Therefore, required lengths are 11x=99 and 8x=72.

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4) Let 1:2:3 be k

Then, k/6k 3 = 1/2 litres = 0.5 litres

2k/6k*3 = 1 litre

3k/6k*3 = 3/2 litres = 1.5 litres

3 litres is divided in the ratio 1:2:3 as 0.5

litres, 1 litre, 1.5 litres.

Step-by-step explanation:

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