Problema Solution
tHE OFFICE MANAGER OF AN ELECTION CAMPAIGN OFFICE NEEDS TO PRINT 6000 POSTCARDS. SUPPOSE THAT IT COSTS 2 CENTS TO PRINT A LARGE POSTCARD AND 1 CENT TO PRINT A SMALL POSTCARD. IF $98 IS ALLOCATED FOR PRINTING POSTCARDS, HOW MANY OF EACH TYPE OF POSTCARD CAN BE PRINTED?
Answer provided by our tutors
tHE OFFICE MANAGER OF AN ELECTION CAMPAIGN OFFICE NEEDS TO PRINT 6000 POSTCARDS. SUPPOSE THAT IT COSTS 2 CENTS TO PRINT A LARGE POSTCARD AND 1 CENT TO PRINT A SMALL POSTCARD. IF $98 IS ALLOCATED FOR PRINTING POSTCARDS, HOW MANY OF EACH TYPE OF POSTCARD CAN BE PRINTED?
let x, y be the number of large and small post cards.
x+y=6000.
0.02x+0.01x=98.
2x+y=9800.
By substracting both equations
x=9800-6000 =3800.
y=6000-3800=2200