Question

A builder completed 5/12of a building in two months and 3 /7 of the remaining part in the third
month. If 24 feet of the building is still left, find the total length of the building,
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Answer 1

$\huge\bigstar\sf\pink{answer}$

First, we need to find the total height constructed in 3 months.

5/12 building constructed in 2 months, leaving 7/12 incomplete.

of that; 3/7 was also completed.

hence, total completed = 5/12 + 3/7*7/12

=5/12+3/12

=2/3 completed.

1/3 remaining = 24 ft. (given)

Hence, complete height = 24*3

=72 ft

Answer 2

$\huge\underline\blue{answer}$

First, we need to find the total height constructed in 3 months.

5/12 building constructed in 2 months, leaving 7/12 incomplete.

of that; 3/7 was also completed.

hence, total completed = 5/12 + 3/7*7/12

=5/12+3/12

=2/3 completed.

1/3 remaining = 24 ft. (given)

Hence, complete height = 24*3

=72 ft