A shop sells pens and files only in packs. A pack of 2 pens cost $8. A pack of 5 files cost $25. A student wants to buy an equal number of pens and files. What is the least amount that the student must pay?
Answers
Answered by
7
Step-by-step explanation:
A pen costs 4 US dollars while a file costs 5 US dollars.The student has to pay 512 dollars to have the same number of pens and files.
Explanation:
If the student wants to buy the same amount of pens and files. The minimum amount will be 9 US dollars (1 pen and 1 file).
Price of a pen
=
32
8
=
$
4
Price of a file
=
35
7
=
$
5
In terms of sets:
The student has to buy 7 sets of pens (total 56 pens) and 8 sets of files (total 56 files).
Now the student has to pay
=
(
$
32
×
7
)
+
(
$
35
×
8
)
=
$
224
+
$
288
=
$
512
Answered by
0
Answer:
Common multiple of 2 and 5 is 10
He bought at least 5 pack of pens and 2 pcks of files
The least amount that must pay is 8x5 + 25X2 = 90
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