Divide 45 by 3 and multiply the answer by 4...
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A hour is sixty minutes Divide the hour by 4 gives you 1 fourth which equals 15 minutes The question requires three fourths so multiply 15 by 3 to get three fourths. 15x3=45. Three fourths of an hour is 45 minutes.
45 minutes !
4 minutes and 45 seconds.
60/4=15 15*3=45 45 minuets
x/y = (9/4) / (3/5) = (9/4) * (5/3) = (9*5)/(4*3) = 45/12 = 15/4