Problema Solution
Alex bought three times as many magazines as books.each magazine costs $16 and each book costs $10 less than each magazine if he spent $270 altogether how many magazines did he buy?
Answer provided by our tutors
let
m = the number of magazines
b = the number of books
Alex bought three times as many magazines as books
m = 3b
each magazine costs $16 and each book costs $10 less than each magazine - this means that the cost of the book is 16 - 10 = $6
he spent $270 altogether
16*m + 6*b = 270
by solving the system of equations
m = 3b
16*m + 6*b = 270
we find
m = 16 magazines
b = 5 books
Alex bought 5 books and 16 magazines.