Gia bought a pound of cheese and used 1/4 of it. she split the rest into 5 equal portions for lunch during the week. which expression represents the fraction of the remaining cheese gia eats for lunch each day?
a.) 3/4 divided by 5
b.) 5 divided by 3/4
c.) 1/4 minus 5
d.) 1/4 divided by 5

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blogan.20174

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.