Ten billion is how much less than trillion

B. Each large crate weighs 200 pounds, and each small crate weighs 125 pounds.

Step-by-step explanation:

Let L be the weight of the large crate and S the weight of the small crate.

Given that 5 identical large crates and 3 identical small crates have a combined weight of 1375 pounds,

5L + 3S = 1375 (1)

Also, in the second loading 3 identical large crates and 6 identical small crates have a combined weight of 1350 pounds,

3L + 6S = 1350 (2)

multiplying equation (1) by 2 and (2) by 1, we have

5L + 3S = 1375 (1)  × 2

3L + 6S = 1350 (2)  × 1

10L + 6S = 2750   (3)

3L + 6S = 1350      (4)

Subtracting (4) from (3), we have

7L = 1400

dividing through by 7, we have

L = 1400/7

L = 200

Substituting L = 200 into (1), we have

5L + 3S = 1375 (1)

5(200) + 3S = 1375 (1)

1000 + 3S = 1375

3S = 1375 - 1000

3S = 375

dividing through by 3, we have

S = 375/3

S = 125

So, each large crate weighs 200 pounds, and each small crate weighs 125 pounds.