Ga man ordered 3 times as many boxes of ballpoint pens as boxes of felt-tip pens. ballpoint pens cost $4.41 per box, and felt-tip pens cost $3.45. if the man's order of pens totaled $83.40, how many boxes of each type of pen did he buy?

f  = 5

b =15

Explanation:

according to the information given we have  Quantity Equation::

b = 3f 1

where b represent boxes and f represent p=felts tip pens

according to the information given

cost of ball point pens per box is $4.41

and felt tip pens cost is 3.45.

total cost of pens is $83.40  

therefore we have Value Equation

4.41b + 3.45f = 83.40  2

Substitute for "b" value in 2 equation

4.41(3f) + 3.45f = 83.40

16.68 f = 83.40

f  = 5

hence b  = 3* 5 = 15

answer: b 56, 250

explanation: