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UKMT Grey Kangaroo, 2024

Algebra Difficulty 2.0 Junior Find the answer United Kingdom

The length of a set of four well-parked and fitted trolleys is 108 cm. The length of a set of ten well-parked and fitted trolleys is 168 cm. What is the length of a single trolley?

(A) $60\text{ cm}$ (B) $68\text{ cm}$ (C) $78\text{ cm}$ (D) $88\text{ cm}$ (E) $90\text{ cm}$

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