Question

A positive number is 7 times another number. IF 15 is added to both the numbers, then one of the new number becomes 5 /2 times the other new number. What are the numbers​

Answer 1

Step-by-step explanation:

let the number be x

then the other number =x/7

according to the condition

x+15=5/2 (x/7+15)

2(x+15)=5x/7+5×15

2x+30=5x/7+75

on simplification we get

2x-5/7x=75-30

14-5/7x=45

9x/7=45

x=45×7/9

we get x=35

hence one number = 35

other number 35/7=5

therefore the number are 35 and 5

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