Which number sentences show how to solve the problem?

a pair of socks costs $5.00. a package of 3 pairs costs $12.00. how much would you save if you buy 2 packages instead of 6 individual pairs?

choose all answers that are correct.

a.

6 × 5 = 30, 2 ×12 = 24, and 30 – 24 = 6

b.

12 – 5 = 7, 7 x 2 = 14, and 14 – 6 = 8

c.

12 ÷ 3 = 4, 5 – 4 = 1, and 1 × 6 = 6

d.

12 ÷ 3 = 4, 4 × 5 = 20, and 20 – 12 = 8