Problema Solution
a stamp collection consists of 5cent and 12cent stamps. the number of 12cent stamps is FIVE less than FOUR times the number of 5cent stamps. the total value is $3.11. find the number of each stamp.
(can you please show me how you got answer)
Answer provided by our tutors
Let 'f' and 't' stand for the number of 5cent stamps and 12 cent stamps respectively. We can write:
t=4f-5 (from: the number of 12cent stamps is FIVE less than FOUR times the number of 5cent stamps.)
.05f+.12t=3.11 (from: total value is $3.11)
Using Algebrator to solve for 'f' and 't', we get:
f=7
t=23