Question 344409
Total number of books in the library is 5 * 44 = 220.


First week 75 are used which is fraction of 75 / 220.
Second week 95 are used which is fraction of 95 / 220.
Third week 95 are used which is fraction of 95 / 220.
Fourth week 160 are used which is fraction of 160 / 220.


Total number of books used in the 4 week period is 75 + 95 + 95 + 160 = 425.
Total fraction of books used is 425 / 220.


To get the decimal equivalent, just take the numerator and divide it by the denominator.


75 / 220 becomes .340909091
95 / 220 becomes .431818182
160 / 220 becomes .727272727
425 / 220 becomes 1.931818182

To get the percent used, just take the decimal equivalent and multiply it by 100%.


.340909091 becomes 34.0909091%
.431818182 becomes 43.1818182%
.727272727 becomes 72.7272727%
1.931818182 becomes 193.1818182%


If you round your percentages to 2 decimal places, then your percentages become:


34.09%
43.18%
72.73%
193.18%