Gavin plans to mix a batch of tangerine paint. He expects to have a total of 5 3/10 ounces of paint after he mixes the amounts of red and yellow. Explain how you can tell if Gavin's expectation is reasonable.

Red: 3 9/10

Yellow: 2 3/8

Tangerine is simply color orange, which is an addition of red and yellow colors. To analyze if the portions written below are reasonable, the given sum must equal to the sum of the individual red and yellow parts.

Total Red + Total Yellow = 5 (3/10)

3 (9/10) + 2 (3/8) ? 5 (3/10

3.45? 1.5

3.45 ≠ 1.5

Since they are not equal, then it means the portions are unreasonable.