Molly and Arthur are taking their daughter Ginny on a roller coaster ride. For safety, they need to find their total weight befo

Question

const2013

1 month ago

10

Molly and Arthur are taking their daughter Ginny on a roller coaster ride. For safety, they need to find their total weight befo

re getting into the same car. Molly’s weight is MMM kilograms, Arthur’s weight is AAA kilograms, and Ginny’s weight is GGG kilograms.
The expression (M+A)+G(M+A)+Gleft parenthesis, M, plus, A, right parenthesis, plus, G describes their total weight. We can also use the expression A+(G+M)A+(G+M)A, plus, left parenthesis, G, plus, M, right parenthesis to represent the same quantity.

Match each amount in the situation with the expression that represents it.

For reference:

Molly is a female and an adult.

Arthur is a male and an adult.

Ginny is a female and a child.

Mathematics

1 answer:

Zina [12.3K] · Answer 1 · 2026-04-11T13:37:47+03:00

Answer:

This phrasing is unusual, but let's attempt to tackle it:

M stands for Molly's weight

A represents Arthur's weight

G signifies Ginny's weight.

We can express the total weight as:

(M + A) + G

or alternatively as:

A + (G + M)

the first configuration illustrates Molly and Arthur's weights combined (hence their weight is presented as a single value), followed by Ginny's weight calculated separately.

The second configuration indicates Arthur's weight on its own, while Ginny and Molly's weights are combined (which is why their total weight appears as a single value)