think about the mathematical process you use as you solve the following problems. show your work.
a. If there are 100 students in a room and 40 of them are boys, how many are girls?
b. if there are 17 blue and white stripes on the flag and 9 of them are blue, how many are white?
c. if there are 250 pennies and dimes in a box and 130 of them are pennies, How many are dimes?
d. now it is time to generalize. Imagine you know how many items you have in a collection of two types of things. If you know how many of one of the items you have,How could you find how many of the other item you have?

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Um can you help me?

60 ^w^?

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