Mary's brother is 3 1/2 feet tall. Mary is 1 1/3 times as tall as her brother.

Question

Mary's brother is 3 1/2 feet tall. Mary is 1 1/3 times as tall as her brother.

How tall is Mary?

Answer 1

The video froze, and then when I logged back in it started as if new. The solution is given twice.

Answer 2

If I understand the question correctly, then the answer is as follows.

Mary's brother's height = 3 1/2 = 3+1/2 =6/2+1/2 =7/2

Mary is 1 1/3 times as tall as her brother.

1 1/3 =1+1/3 =3/3+1/3 =4/3

This is equivalent to Mary's height being 4/3 times as tall as her brother.

Mary's height = Mary's brother's height * multiplier

=7/2*4/3 =28/6 =14/3 ft

So Mary's height is 14/3 ft

Please remember to write the units at the end