Five boxes together have 725 marbles.

Question

If the first box has 20 marbles more than
the other four ,how many marbles are
there in the first box

Answer 1

Let's call the number of marbles in the first box "x".

Then, the number of marbles in the other four boxes combined is 725 - x.

We also know that the first box has 20 more marbles than the other four, so:

x = (725 - x) + 20

Simplifying:

2x = 745

x = 372.5

Since we can't have half a marble, we round up to the nearest whole number.

Therefore, there are 373 marbles in the first box.