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Gala2k [10]
3 years ago
9

A radio station broadcasts programs and commericals 20 hours everyday. The ratio of the time spent on commercials to the program

ming time is 1:4. How much time each day does the station spend broadcasting commercials?
Mathematics
1 answer:
Vanyuwa [196]3 years ago
7 0
The answer is 4 hours

p -<span> the programming time
</span>c - time spent on commercials

<span>A radio station broadcasts programs and commercials 20 hours everyday:
p + c = 20

</span><span>The ratio of the time spent on commercials to the programming time is 1:4.
c : p = 1 : 4
p = c * 4 : 1
p = 4c

p + c = 20
p = 4c
_____
4c + c = 20
5c  = 20
c  = 20 : 5
c = 4h</span>
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