PSLEJulian pushes two sticks, F and G, straight into the ground until the length of each stick that is above the ground is the same.
16 of F and
18 of G are in the ground. The length of F in the ground is 12 cm longer than the length of G in the ground. What is the total length of sticks F and G?
Fraction of Stick F above ground
= 1 -
16 =
56 Fraction of Stick G above ground
= 1 -
18 =
78 Heights of Sticks F and G above ground are the same.
56 F =
78 G
3542 F =
3540 G
Length of Stick F more than length of Stick G
= 42 u - 40 u
= 2 u
2 u = 12
1 u = 12 ÷ 2 = 6
Total length of Sticks F and G
= 42 u + 40 u
= 82 u
= 82 x 6
= 492 cm
Answer(s): 492 cm