PSLEPaul pushes two sticks, U and V, straight into the ground until the length of each stick that is above the ground is the same.
14 of U and
16 of V are in the ground. The length of U in the ground is 8 cm longer than the length of V in the ground. What is the total length of sticks U and V?
Fraction of Stick U above ground
= 1 -
14 =
34 Fraction of Stick V above ground
= 1 -
16 =
56 Heights of Sticks U and V above ground are the same.
34 U =
56 V
1520 U =
1518 V
Length of Stick U more than length of Stick V
= 20 u - 18 u
= 2 u
2 u = 8
1 u = 8 ÷ 2 = 4
Total length of Sticks U and V
= 20 u + 18 u
= 38 u
= 38 x 4
= 152 cm
Answer(s): 152 cm