Question

April's 6 years older than her brother daniel. in 16 years the sum of their ages will be 100 years. suppose that april is x years old now. solve the equations.

Answer 1

a=6+d
a+16+d+16=100
sub 6+d for a
6+d+16+d+16=100
2d+38=100
minus 38 both sides
2d=62
divide both sides by 2
d=31
a=6+d
a=6+31
a=37

april is 37