Hannahrussellxidn
Answered

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what number needs to be added to 7 and 9 so that the ratio of the first number to the second becomes 4:5?​

Sagot :

Step-by-step explanation:

Let the number be x.

Now after adding 7 and 9 and taking the ratios of first and second the ratio becomes 4:5.

According to the given condition,

x+7 / x+9 = 4 / 5

5 (x+7) = 4 (x+9)

Cross multiplying both sides , we get

5x + 35 = 4x + 36

x = 1

The number obtained is 1.

The number that is added to 7 and 9 and when taken ratio gives 4:5
It is X=1
Well I think so haha
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