Glen put three books, with the total weight of 10kg, into his backpack. Later, he took two of his books out and put them into his locker. The two books weighed 7 kg in total. What is the integer sum that represents the current weight of Glenn's backpack?
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Given : Glen put three books, with the total weight of 10kg, into his backpack.
Later, he took two of his books out and put them into his locker.
The two books weighed 7 kg in total.
To Find : What is the integer sum that represents the current weight of Glenn's backpack
Solution:
Weight of 3 Books = 10 kg
Weight of 2 Books = 7 kg
Current weight of Glenn's backpack = Weight of 3 Books - Weight of 2 Books
=> Current weight of Glenn's backpack = 10 - 7 kg
=> Current weight of Glenn's backpack = 3 kg
10 + (-7) = 3
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