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April 25, 2014

Homework Help: Math

Posted by Rezu on Thursday, May 17, 2012 at 7:29pm.

If Sally places a rocket that is 3 feet 6 inches tall atop a launch pad that is 1 foot 8 inches tall, how tall will the entire unit, rocket and launch pad, be when she is done?

A.5 feet 4 inches
B.5 feet 2 inches
C.1 foot 8 inches
D.4 feet 2 inches
B?
3 feet 6 inches converts as:
3 feet x 12 inches/foot = 36 inches.
36 inches + 6 inches = 42 inches.
1 foot 8 inches converts to:
1 foot x 12 inches/foot = 12 inches.
12 inches + 8 inches = 20 inches.
Then

42 + 20 = 62 inches.

62 divided by 12 = 5 remainder 2,

which is 5 feet 2 inches.
Is this correct?

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