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Mathematics 20 Online
OpenStudy (anonymous):

an office manager ordered 60 stamps for a total of $21.70. There were only 42-cent and 17-cent stamps in order.How many of each type did the office manager order? How many of each type did the office manager order?

OpenStudy (anonymous):

are you familiar with simultaneous equations?

OpenStudy (anonymous):

no

OpenStudy (anonymous):

so let n be the number of 42 cent stamps and m be number of 17 cent stamps then how many must n+m be?

OpenStudy (anonymous):

59

OpenStudy (anonymous):

no from the question the man bought 60 so n+m=60

OpenStudy (anonymous):

and 0.42*n+0.17m=21.70

OpenStudy (anonymous):

ok what do i do now

OpenStudy (anonymous):

i do not know hot to solve for n

OpenStudy (anonymous):

?

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