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MakcuM [25]
3 years ago
11

Fred completed 10 math problems. this is 40%of the number of math problems he has to do. how many math problems does he have to

do?
Mathematics
2 answers:
creativ13 [48]3 years ago
8 0
40 times 2 equals 80. So if we double both the numbers now he has done 20 math problems and 80% is done. But now we have to split the 10 in half because you cant do 80% plus 40% You have to do 80% plus 20% and that would be half of the 10. So in conclusion your answer is 25 math problems. ;)
Anuta_ua [19.1K]3 years ago
4 0
He need to do is like 24 math problems because 10 math problem are 40 plus another 10 math problem is 80 plus 20 equal a 100
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