Tutorial3.pdf

UNIVERSITI PUTRA MALAYSIA

FAKULTI SAINS

MTH 3004 PENGENALAN KEPADA MATEMATIK EKONOMI DAN PERNIAGAAN
Tutorial 3
1. Solve the following system of equations by substitution method:
(a)


(b)


(c)




(d)




(e)




2. Solve the above questions again by using elimination method.

3. A mobile phone dealer has to reach a target of selling RM200000 worth of MP3 players.
He has two brands of MP3 player whereby brand A is worth RM300 each and brand B
sells at RM450 each. How many brand A and brand B he has to sell in order to reach his
target if the total number of MP3 players in his shop is 480 (rounded to integers if
necessary).

4. A shop sells two types of delicacy worth per 200 grams (for delicacy A) and
per 500 grams (for delicacy B). The owner has sold 725 kilos of delicacies that
day which give her RM5000. Determine how much kilos of delicacy A and B sold
respectively.

5. Consider a farmer who wants bine x kg fertilizer A, which costs per kg,
with y kg fertilizer B at per kg to obtain 2000 kg mixture worth per kg.
Set up the equation system and solve how many kg the farmer should have from each
side.

6. Find th