Question

two numbers are in the ratio 7:9.If their sum is 320,find the numbers

Answer 1

Let numbers are : 7x and 9x



Their sum = 320

$7x + 9x = 320 \\ \\ 16x = 320 \\ \\ x = \frac{320}{16} \\ \\ x = 20$



Numbers are :

7x = 7(20) = 140
9x = 9(20) = 180




I hope this will help you


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Answer 2

7:9
7x:9x
7x +9x = 320
16x=320
x=320/16
x=20
7x :9x
7(20):9(20)
140:180