80% of 30 is 24.
Given,
80% of what number is 24.
Let the number be x,
Then,
80% of x = 24
80/100 of x = 24
x = 30
Thus the required number is 30.
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What about in hours if u find the answer can u do it step by step
By subtracting the number of postcards from Canada from the total collection, we find that there are 59 postcards from the United States.
The subject of this problem is subtraction in math. We know that Callie has 83 postcards in total, and 24 postcards are from Canada. The rest are from the United States. We can find out how many postcards are from the United States by subtracting the Canadian postcards from the total collection. So, 83 (total) - 24 (Canadian) = 59 postcards are from the United States.
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