Question

Alice and Aaron are working as a pair in math class. They decide to each answer the question asked and compare solutions. Their answers were as follows: Alice: 73⋅79 =72773⋅79 =727 Aaron: 73⋅79=71273⋅79=712 They are not sure why they got two different answers. Who has the correct solution and what did the person do that missed it that was incorrect?

Answer 1

Alice has the correct solution. Aaron made a mistake by multiplying 73 by 79 and getting 712 instead of 727. Aaron must have made an error in his multiplication calculation.