Question

Vanya, a newborn going through a growth spurt, grew out of an average of 250 socks per month from January to March, inclusive. He grew out of an average of 300 socks per month in April and May. Find the average amount of socks Vanya grew out of during the 5 months.

Answer 1

270 socks/month over 5 months

Explanation:

To calculate this total number of outgrown socks, we multiply (250 socks/mo) by 3 months (Jan., Feb. and Mar.) and then (300 socks/month) by 2 months (Apr., May):

Total average number of socks per month:

Total number of socks / number of months:

3(250) + 2(300) socks

----------------------- * ----------- = 270 socks/month over 5 months

5 mo