Question

Which situations result in quantities that combine to make 0?

A. Lane was given $5 as a gift and made a $15 purchase.
B. The temperature rose 40 by noon. By 10 p.m., the temperature had dropped 40.
C. Janie credited her customer’s account with $67 and debited the account for $67 three days later.
D. Loren withdrew $25 from her bank account on Monday, and she withdrew an additional $25 from her bank account on Tuesday.
E. The veterinarian discovered a dog had lost 2 pounds since his last visit. A month later, the same dog had lost 2 more pounds.

Please choose the correct options (or multiple options) that apply to quantities combining to make 0.

Answer 1

Situations B and C result in quantities combining to make 0, with B showing a net temperature change of 0 degrees and C reflecting a customer's account balance returning to its original state after being credited and debited for the same amount.

Step-by-step explanation:

The situations that result in quantities that combine to make 0 are:

• (B) The temperature rose 40 by noon. By 10 p.m., the temperature had dropped 40.
• (C) Janie credited her customer’s account with $67 and debited the account for $67 three days later.

For option (B), if the temperature rises by 40 degrees and then drops by 40 degrees, the net change in temperature is 0 degrees. Similarly, in option (C), if Janie credits an account with $67 and later debits the same amount, the net effect on the account's balance is 0 dollars. The other options listed result in changes that do not combine to bring the total back to zero; instead, they show a decrease or loss.