Question

what number when increased by 15% become 276​

Answer 1

Let’s call the number x. So 15% of x is 0.15x. Increasing the number means addition. So the question can be written out like this:

x+0.15x=276

Remember that the unseen coefficient for the first x is 1

1.15x=276

x=240

Answer 2

Let, the number be x
So,
According to the statement,
x + 15% of x = 276
x +x * 15/100 = 276
x( 1 + 15/100) = 276
x( (100+15) /100)= 276
x( (115/100)= 276
x = 276 * 100/115
x = 276 * 20/23 ( Dividing by 5)
x = 12 * 20 ( 276 goes 12 in 23)
x = 240
Thus, The number is 240.