SAT Prep 1

Option A is correct.

Explanation:

A: Using 50 heliostats results in roasting times under six minutes, directly supporting Armijo’s hypothesis that more heliostats reduce roasting time.

B: This only shows that people prefer the flavor of solar-roasted chiles, which doesn’t relate to roasting speed.

C: Easier-to-peel skins describe quality, not roasting time, so it doesn’t support the hypothesis.

D: Even heat distribution concerns roasting consistency, not speed, so it doesn’t directly support the hypothesis.

10 % is equal to 0.1 or 1/10. To solve, multiply 470 by 0.1. You get 47.