Question

Three numbers are in the ratio 4:5:7. If the sum of their squares is 3240, find the three numbers.

Answer 1

Answer:

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Step-by-step explanation:

Answer 2

Answer:

let the common multiple be X

(4x) x (4x) + (5x) x (5x) + (7x) x (7x) = 3240

16x^2 +25x^2+49x^2 = 3240

90x^2 = 3240

x^2 = 3240/90

x^2 = 36

x =6

those numbers =

4x = 4 x 6 = 24

5x = 5 x 6 = 30

7x = 7 x 6 = 42