Question

two numbers are in the ratio 3:7 if the sum of the numbers is 330 find the numbers

Answer 1

let the number be x

so first number is 3x and second 7x

so,3x+7x=330 11x=330 x=330/11=30

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Answer 2

There are many numbers in the ratio of 3:7. Multiply 3 and 7 with any number we get a pair of numbers in the ratio of 3:7. For example let's multiply 3 and 7 with 21 we get 63 and 147, 63 and 147 are in the ratio of 3 :7. The problem here is with what number should 3 and 7 be multiplied so that sum of those numbers will be 330. Let us say that number is x. So the numbers are3x and7x..Now sum of those numbers is

3x+7x=330
10x=330
x=33

So the numbers are

3×33=99
7×33=231

99and 231 are in the ratio of 3 : 7 and their sum is 330.

I hope it will help you.......