Mr. Samuel is twice as tall as his son, William. William's sister, Sarah, is 4 ft and 6 in. tall. If William is 3/4 as tall as his sister, how tall is Mr. Samuel?

1 Answer
Jul 22, 2017

I tried this:

Explanation:

Let us call the heights of the various people: #s#, #w# and #sa# for Sarah.
We get:

#s=2w#
#sa=54# (I set it in inches)
#w=3/4sa#

so from the second into the third:

#w=3/4*54=40.5#

into the first:

#s=2*40.5=81# inches corresponding to #6# feet and #9# inches.