samir spent half as long working on his physics homework as cory did. if samir spent 40 minutes on his…
samir spent half as long working on his physics homework as cory did. if samir spent 40 minutes on his physics homework, how long did cory spend on his physics homework? choose 1 answer: a 20 minutes b 40 minutes c 60 minutes d 80 minutes
Answer
Explanation:
Step1: Set up the relationship
Let $x$ be the time Cory spent. We know Samir spent half as long as Cory, so Samir's time is $\frac{x}{2}$.
Step2: Substitute Samir's time
Given Samir spent 40 minutes, so $\frac{x}{2}=40$.
Step3: Solve for $x$
Multiply both sides by 2: $x = 40\times2=80$.
Answer:
D. 80 minutes