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Answer :
Answer:
40 miles
Step-by-step explanation:
First, change the 15 minutes to 0.25 hours and 3 minutes to 0.05 because we are working with mph.
let x be the normal driving time to work in hours so 40x is the driving to work
since we know distance = speed multiplied by time we do
50(x-0.25+0.05)=40x
50(x-0.2)=40x
50x-10=40x
50x-40x=10
10x=10
x=1 hour normal time to work
therefore
40(1) = 40 mi to work
Confirm this by finding the dist when he went 50 mph for 48 min (0.8hrs)
50(1-.25+0.05) = 50(.8) = 40 mi also
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