A plumber would like to cut a pipe 60 cm long into two piece. One piece is 10 cm longer than the other. Find the length of the two piece

Answer 1

a = first piece

b = second piece

One piece is 10 cm longer than the other mean:

b = a + 10

a + b = 60

a + a + 10 = 60

2 a + 10 = 60 Subtract 10 to both sides

2 a + 10 - 10 = 60 - 10

2 a = 50 Divide both sides by 2

a = 50 / 2 = 25 cm

b = a + 10

b = 25 + 10 = 35 cm