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