Question

A positive number is 5 times another no. If 21 is added to both the number became twice of other new no..find the original no.
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Answer 1

Answer:

35/7

Step-by-step explanation:

Let the number be x

other number y

x=5y

(x+21)=2(y+21)

substitute x as 5y

5y+21=2y+42

3y=21

y=7

x=35