Question
A grey box has 4 times as many marbles as a yellow box. Henry added 7 marbles to the grey box and 7 marbles to the yellow box. If there are 3 times as many marbles in the grey box as the yellow box, what was the total number of marbles in the two boxes after Henry added the marbles?
3 m

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A grey box has 4 times as many marbles as a yellow box. Henry added 7 marbles to the grey box and 7 marbles to the yellow box. If there are 3 times as many marbles in the grey box as the yellow box, what was the total number of marbles in the two boxes after Henry added the marbles?