Question

what must be added to the two numbers which are in the ratio 5:12 so that new ratio becomes 3:4​

Answer 1

Answer:

5:12+x=3:4

X=3/4///5/12

X=3/4×12/5

X=3/1×3/5

X=9/5

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Answer 2

16 must be added to the ratio 5:12 so that it will become the new ratio 3:4

Step-by-step explanation:

The two numbers are in the ratio 5:12

the new ratio = 3:4

let the number required to be added be x

then according to the question,

using trail and error method

$\frac{5+x}{12+x}$ $=$ $\frac{3}{4}$

by cross muliplying

4(5+x)= 3(12+x)

20+4x= 36+3x

4x-3x= 36-20

x= 16

hence, 16 must be added to the ratio 5:12 so that it will become the new ratio 3:4

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