PSLEAhmad pushes two poles, W and X, straight into the ground until the length of each pole that is above the ground is the same.
15 of W and
18 of X are in the ground. The length of W in the ground is 15 cm longer than the length of X in the ground. What is the total length of poles W and X?
Fraction of Pole W above ground
= 1 -
15 =
45 Fraction of Pole X above ground
= 1 -
18 =
78 Heights of Poles W and X above ground are the same.
45 W =
78 X
2835 W =
2832 X
Length of Pole W more than length of Pole X
= 35 u - 32 u
= 3 u
3 u = 15
1 u = 15 ÷ 3 = 5
Total length of Poles W and X
= 35 u + 32 u
= 67 u
= 67 x 5
= 335 cm
Answer(s): 335 cm