Question

Alma is 6 3/4 years old,while her brother david is 3 5/6 years old.What is the sum of the ages of alma and david?

Answer 1

127/12 = 10 7/12

Explanation:

convert mixed fractions into improper fractions

6¾ =[(6×4)+3]/4 = 27/4

3 5/6 = [(6×3)+5]/6 =23/6

sum up the fractions

we get

(27/4)+(23/6)

= (81+46)/12. LCM is 12

= 127/12

divide 127 with 12

the remainder is 7, quotient is 10 and the

divisor is 12

we get the mixed fraction

10 7/12