If my age was thrice my sisterSolutionMy present age of my s

If my age was thrice my sister

Solution

My present age of my sister= x assumed.

3 years before her age = x-3.

My age 3 ters ago = 3tines my sister\'s age= 3(x-3).

Next year my sister\'age = x+1.

My age next year = 3(x-3) + 4 this twice sister\'s age next year = 2(x+1).

So the required equation is:

3(x-3)+4 = 2(x+1). We solve this.

3x-9 +4= 2x+2

3x-2x = 2+9-4

x = 7.

So my sister\' age = 7.

My age = my age next year -1 = 3(x-3)+4 -1 = 3x-9+3 = 3x-6 = 7*3-6 = 15

My age = 15 and my sister\'s age = 7.