3 years ago

you buy 75 candy bars at a cost of $0.49 each what is the total cost of 75 candy bars? use mental math

Mathematics

2 answers:

avanturin [10]3 years ago

7 0

It took me a second but its $36.75

svp [43]3 years ago

5 0

The cost= 75 candy bars •$0.49;
75•49/100= ((75•50)-75)/100= ((75•100/2)-75)/100= ((7500/2)-75)/100=
(3750-75)/100= 3675/100= 36.75

Or
75•50cents= 37.5
considering you pay 50 cents instead of 49;
37.5 -0.75= 36.75
Now you took away the extra penny between 50 and 49

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