Question

2/5of a number is less than the original number by 20. Find the number.​

Answer 1

Answer:

If 2\5 of a number is 8 less than 2\3 of the number, what is the number?

Let the number be x

25×x=23×x−8

Multiply both 2 with x

2x5=2x3−8

Take LCM of 3 and 5

2x5−2x3=−8

10x−6x15=−8

Transport 4 to other side

4×x=−8×15

x=1204

x=30

If 2/3 of a number is 8 more than 2/5 of the number, what is 1/6 of the number?

If 1/8 of the number is 6, what is the number?

If 2/7 th of a number is 3 less than 1/2 the number, then what is the number?

If 2 more than 2/3 of a certain number is 8, then what is the number?

If 2/5 of a number is 60, what is that number?

Let the number be the x

So, as given (2/5)x is equals to (2/3)x - 8

I.E.

(2/5)x = (2/3)x - 8

2x/5 = (2x/3) - 8

2x = (2x/3)×5 - 40

2x = 10x/3 - 40

(2x)3 = 10x - 120 // L.C.M.

6x = 10x - 120

120 = 10x - 6x

120 = 4x

Hence,

x = 30

Explanation: