Question
PSLE
Bobby pushes two rods, N and P, straight into the ground until the length of each rod that is above the ground is the same.

13 of N and 16 of P are in the ground. The length of N in the ground is 9 cm longer than the length of P in the ground. What is the total length of rods N and P?
2 m

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PSLE
Bobby pushes two rods, N and P, straight into the ground until the length of each rod that is above the ground is the same.

13 of N and 16 of P are in the ground. The length of N in the ground is 9 cm longer than the length of P in the ground. What is the total length of rods N and P?