Question

A number increased by 40 is equal to twice a number decreased by 10. Find number ​

Answer 1

Answer:

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Twice a number increased by 8 is 20. What is the number?

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6 Answers



Harikirtan Worlu

, B.ENG Petroleum & Gas Eng from University of Port Harcourt (2014)

Answered 2 years ago · Author has 116 answers and 466.9K answer views

Solution:

let the number be x.

Twice the number means = 2x

Twice the number increase by 8 means =2x+8

Twice the number increase by 8 is 20 then means

2x+8=20

Therefore the solution to this equation will be as follows:

2x=20–8

2x=12

Divide both sides by the coefficient of x,that is 2 in this case:

2x/2=12/2

This becomes:

x=6