if Jhon had 2 apples and he gave Tracy 3 calculate the distance from the moon to the earth, in centimeters.
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The number of stamps and the cost are illustrations of unit rates
40 stamps would cost $22
The cost of 15 postage stamps is $8.25
Start by calculating the unit rate of the stamps.
So, the number of stamps for $22 is calculated by dividing $22 by the unit rate.
So, we have:
Hence, 40 stamps would cost $22
Read more about unit rates at: