PSLEOliver pushes two sticks, Z and A, straight into the ground until the length of each stick that is above the ground is the same.
18 of Z and
110 of A are in the ground. The length of Z in the ground is 16 cm longer than the length of A in the ground. What is the total length of sticks Z and A?
Fraction of Stick Z above ground
= 1 -
18 =
78 Fraction of Stick A above ground
= 1 -
110 =
910 Heights of Sticks Z and A above ground are the same.
78 Z =
910 A
6372 Z =
6370 A
Length of Stick Z more than length of Stick A
= 72 u - 70 u
= 2 u
2 u = 16
1 u = 16 ÷ 2 = 8
Total length of Sticks Z and A
= 72 u + 70 u
= 142 u
= 142 x 8
= 1136 cm
Answer(s): 1136 cm