Three students can wash a car in 16 minutes. If the time varies inversely with the number of students washing the car, how many
minutes will it take two students to complete the job?
a. 20b22c.24d. 32/3
1 answer:
Let
x----------> the number of students
y---------> the time in minutes
we know that
<span>If the time varies inversely with the number of students
</span>so
y=k/x
for x=3
y=16 min
16=k/3---------> k=48
y=48/x
for x=2
y=48/2-------> y=24 minutes
the answer is
24 minutes
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