Question

Sum of the ages of three people is 100 years. What will be the sum of their ages after 5 years?

Answer 1

Answer:

let the ages of people be x,y,and z respectively.

then,

x+y+z=100 years for current time

after 5 years,their ages will be,

x+5,y+5,and z+5,

so,to maintain both the sides of equation add 5 three times to Right hand side of the equation

that is,

x+5+y+5+z+5=100+5+5+5

x+y+z+15=115

so their sum of ages of three people after 5 years will b 115 years