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zhenek [66]
3 years ago
8

box A has 4 marbles.box A has 5% of the marbles.what is the total amount of marbles in all four boxes

Mathematics
2 answers:
laila [671]3 years ago
8 0
Box A is 4. 4 is 5% of the total boxes.
5% = 1/20, so multiply whatever number that's 5% of the total by 20 to get the total.
4 x 20 = 80.
There are 80 marbles total.
Hope this helps!
NISA [10]3 years ago
3 0
The total amount in all four boxes is 80

Explanation:
We know that box A has 4 marbles, and it has 5% of the marbles in total. So we can set up a proportion.

4 1% 5%
--- = --- = ---
n 20% 100%



We want to figure out what n is. To do that, we first simplify 5/100 to 1/20. To get from 4 to 1, its divided by 4. We want to do the same thing to n (divide n by 4). To do this, we do the inverse operation of division, and we multiply 20 x 4, which is 80. Therefore, the total amount of marbles is 80.
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