WAEC Further Mathematics 2019 Question 39

A uniform beam, PQ, is 100 cm long and weighs 35 N. It is placed on a support at a point 40 cm from P. If weights of 54 N and F N are attached at P and Q respectively in order to keep it in a horizontal position, calculate, correct to the nearest whole number, the value of F.

1. A.69
2. B.60
3. C.35
4. D.30