Jose asks his friends to guess the higher of two grades he received on his math tests. He gives them two hints. The difference of the two grades is 16 The sum of one-eighth of the higher grade and one-half of the lower grade is 52 The system that represents his scores is shown. x minus y is equal to 16; 1 eighth x plus 1 half y is equal to 52 What is the higher grade of Jose’s two tests?
Let x be the higher grade and y the lower grade. From x − y = 16, we have x = y + 16. Multiplying the second equation by 8 gives x + 4y = 416; substituting x = y + 16 yields 5y = 400, so y = 80 and x = 96. The higher grade is 96, choice B.
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