PSLEVaidev pushes two sticks, W and X, straight into the ground until the length of each stick that is above the ground is the same.
13 of W and
17 of X are in the ground. The length of W in the ground is 6 cm longer than the length of X in the ground. What is the total length of sticks W and X?
Fraction of Stick W above ground
= 1 -
13 =
23 Fraction of Stick X above ground
= 1 -
17 =
67 Heights of Sticks W and X above ground are the same.
23 W =
67 X
69 W =
67 X
Length of Stick W more than length of Stick X
= 9 u - 7 u
= 2 u
2 u = 6
1 u = 6 ÷ 2 = 3
Total length of Sticks W and X
= 9 u + 7 u
= 16 u
= 16 x 3
= 48 cm
Answer(s): 48 cm