Three students can wash a car in 16 minutes. If the time varies inversely with the number of students washing the car, how many

Question

slamgirl [31]

3 years ago

8

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

Mathematics

1 answer:

gogolik [260] · Answer 1 · 2022-05-29T15:31:01+03:00

gogolik [260]3 years ago

6 0

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