Your model looks correct.

You can think of it as giving 660 first, then giving another 60.

After giving 660, it's just a role reversal. Box B now has 660 more than box A.

Then after giving the next 60, Box A reduced by 60 while Box B increased by 60.


60 + 60 = 120

The difference has now increased by 120.

120 + 660 = 780

So now Box B has 780 more than Box A.

5 times as much means 4 times more.

780 = 4 times or you can say 4 units

1 time/unit = 780 ÷ 4 = 195

Box A has 195 now.

Box A at first = 195 + 720 = 915

J you're right

Yup, you too. Good job on your answer working

Thanks for the quick response and support