Question

The ratio of two numbers is a:b if the first number is x find the second.​

Answer 1

Let the required number be y

a:b::x:y

a×y=b×x

y=

a

bx

so the answer is bx/a

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Answer 2

Answer:

the required no. is y

$a:b::x:y\\a X y = b X x\\y=\frac{ba}{a}$

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