Multiple Choice Question
A metal rod is divided into three parts A, B and C. The lengths of A and B are in the ratio 9 : 20, and the lengths of C and B are in the ratio 5 : 11. If the difference between the lengths of A and C is 10 cm, find the total length (in cm) of the metal rod.
Explanation:
Let B = 220k ⇒ A = 99k and C = 100k ⇒ Difference = 10 ⇒ k = 1 ⇒ Total = 419.
