PSLEValen pushes two sticks, K and L, straight into the ground until the length of each stick that is above the ground is the same.
14 of K and
18 of L are in the ground. The length of K in the ground is 16 cm longer than the length of L in the ground. What is the total length of sticks K and L?
Fraction of Stick K above ground
= 1 -
14 =
34 Fraction of Stick L above ground
= 1 -
18 =
78 Heights of Sticks K and L above ground are the same.
34 K =
78 L
2128 K =
2124 L
Length of Stick K more than length of Stick L
= 28 u - 24 u
= 4 u
4 u = 16
1 u = 16 ÷ 4 = 4
Total length of Sticks K and L
= 28 u + 24 u
= 52 u
= 52 x 4
= 208 cm
Answer(s): 208 cm