Question

the result of a number when increased by 15% is 161 find this number

Answer 1

Answer:

140

Step-by-step explanation:

Let the number be "x"

As per given conditions we have,

X+(15/100×X)=161

X+3x/20=161

23x=3220

x=140

hence, the number is 140

Answer 2

Concept:

Replace the unknown quantity by variable and then form a mathematical equation using the given condition and variable. On solving which we can find the required value or quantity.  

Given:

Given that, a number when increased by 15% is 161

Find:

The initial number.

Solution:

Let the number initially be = x

If we increased it by 15% then we get the number

= x*((100+15)/100)

= x*(115/100)

= x*(23/20)

= 23x/20

According to the given information in this problem we get,

23x/20 = 161

23x = 161*20

23x = 3220

x = 3220/23

x = 140

Hence the number is given by 140.

#SPJ2