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ArbitrLikvidat [17]
3 years ago
5

Yolanda has finished 45% of the homework problems she was assigned. So far she has finished 27 problems.

Mathematics
1 answer:
sveta [45]3 years ago
7 0
p\%=\frac{p}{100}\\\\A.\ 45\%=\frac{45}{100}=\frac{45:5}{100:5}=\boxed{\frac{9}{20}}\\\\B.\   \begin{array}{ccc}45\%&-&27\\100\%&-&x\end{array}\ \ \ \ |cross\ multiply\\\\\\45\cdot x=27\cdot100\\45x=2700\ \ \ \ |divide\ both\ sides\ by\ 45\\\boxed{x=60}\\\\C.\ 60-27=\boxed{33}
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