Whole Number P6

Alex is as many months old as his grandpa is in years and about as many days old as his dad is in weeks. If the sum of their 3 ages is 140 years, how old is each?

A [][][][][][][][][][][][] months --> [] years
G [][][][][][][][][][][][] years

A [12 x 4 x 7] days     x 4 to convert to weeks, x 7 to convert to days
D [12 x 4 x 7] weeks --> [][][][][][][] years    ÷ 4 to convert to months, ÷ 12 to convert to years

20 u --> 140 years
1 u --> 140 ÷ 20 = 7 years

12 u --> 12 x 7 = 84 years

7 u --> 7 x 7 = 49 years

Alex, his dad and grandpa are 7 years, 49 years and 84 years old respectively.