Question

Pls help with the following sums:-

1) If 343 is the third proportional of a and b, where a:b = 1:7, then find the value of a+b

2) If a:b = 4:5 and b:c = 2:3, then a:c = ?​

Answer 1

Answer:

1)8

2)4:3

Explanation:

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Answer 2

Given : The third proportional is 343. Therefore B = 7*7 = 49.

a:c is equal to 8:15.

In the question, it is given that the ratio of a to b is 2:3 and that of b to c is 4:5. With this information we have to calculate a:c.

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