Question

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

Answer 1

270 pairs of socks

Explanation:

250 pairs of socks per month (3 months) + 300 pairs of socks (2 months) =

750 + 600 = 1,350 pairs of socks in 5 months

1,350 ÷ 5 months = An average of 270 socks per month

Answer 2

270 pairs of socks

Explanation:

We need to know how much Vanya grew in total during the 5 months. However, in the statement they give us are the average amounts for 2 and 3 months. So:

If Vanya grew an average of 250 pairs of socks for 3 months, then a total of:

250 * 3 = 750 pairs of socks in 3 months.

If Vaya then grew an average of 300 pairs of socks for 2 months, then you grew a total of:

300 * 2 = 600

In the 5 months, Vanya grew a total of 750 +600 = 1350 pairs of socks.

We already have the total amount of pairs of socks that Vanya grew. Now, to find the average during the 5 months, we divide the total by 5.

1350/5 = 270

Vanya grew an average of 270 pairs of socks during the 5 months.