PSLEBryan pushes two rods, W and X, straight into the ground until the length of each rod that is above the ground is the same.
18 of W and
112 of X are in the ground. The length of W in the ground is 32 cm longer than the length of X in the ground. What is the total length of rods W and X?
Fraction of Rod W above ground
= 1 -
18 =
78 Fraction of Rod X above ground
= 1 -
112 =
1112 Heights of Rods W and X above ground are the same.
78 W =
1112 X
7788 W =
7784 X
Length of Rod W more than length of Rod X
= 88 u - 84 u
= 4 u
4 u = 32
1 u = 32 ÷ 4 = 8
Total length of Rods W and X
= 88 u + 84 u
= 172 u
= 172 x 8
= 1376 cm
Answer(s): 1376 cm