Question 202088
There are exactly four times as many submarines as there are aircraft. Which of the following can be the total number of submarines and aircraft combined?
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If a = #of aircraft, then
4a is the # of subs.
a + 4a = 5a
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You can't have a fraction of a sub or an aircraft, so it's a whole number that's a multiple of 5.
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Only answer #1, 35 is a multiple of 5.
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It wasn't asked for, but there are 7 aircraft and 28 subs.