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A printer printed 68 letters in 4 seconds. If it prints letters at a constant speed, it can print ______ letters in 30 seconds.

A printer printed 68 letters in 4 seconds. If it prints letters at a constant speed, it can print ______ letters in 30 seconds.
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A printer printed 68 letters in 4 seconds. If it prints letters at a constant speed, it can print ______ letters in 30 seconds.

User Wim Hermans
by
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2 Answers

2 votes

Answer:

510 in 30 sec

Explanation:

User Lucas Oman
by
8.0k points
4 votes
We can write this as a proportion
68/4 = x/30
cross multiply
68 * 30 = 4x
2040 = 4x
divide both sides by 4
510 = x

It can print 510 letters in 30 seconds.

Hope this helps :)

User Llioor
by
9.3k points
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