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famouzgal
14.02.2020 •
Mathematics
Joy and joanna both purchase party invitations.They both spent the same amount of money. Joy spent $.75 per invitation and $3.25 on shipping and handling. Joanna spent $.50 on each invitation and $6.00 on shipping and handling. How many invitations did each girl purchase?
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Ответ:
11 invitations each
Step-by-step explanation:
Let the number of invitations they bought be x .
Since they spent the same amount of money, Their total costs would be the same. Hence ;
3.25 + 0.75(x) = 0.5x + 6
0.75x - 0.5x = 6 - 3.25
0.25x = 2.75
x = 2.75/0.25
x= 11 invitations
Ответ:
y=-12,y=-1/6
Step-by-step explanation:
there