Question 33

A smaller parcel and a larger parcel have masses in the ratio 2:3. The larger parcel is 54 kg. What is their total mass?

72 kg from adding the two known terms
90 kgCorrect answer
81 kg from scaling the larger share
56 kg from adding the smaller ratio term

Explanation

Three parts correspond to 54 kg, so each part is 18 kg; all 5 parts therefore weigh 90 kg. Adding 2 kg to 54 kg would confuse the smaller ratio term with the smaller parcel's actual mass.

Explanation

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