Choy has $25 in his lunch account at school. He spends $3 each day to eat in the cafeteria. What is Choy's lunch account balance after two weeks of buying his lunch in the cafeteria?

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Answer 1 · 2016-12-10T09:59:10

#-$5" "# ( Choy is in debt )

Suppose there are 5 school days in 1 week

Then for 2 weeks we have #2xx5=10# days

At $3 for each day this gives a total spent as: #10xx$3=$30#

The amount in the account is $25

So the account at the end of this period has 'deposit - expense'.
which is #" "$25-$30 = -$5#

The negative $5 means that Choy has borrowed #-$5#

So he is in debt.