Posted by Anonymous on Wednesday, June 16, 2010 at 4:08pm.
The cost of 3 markers and 2 pencils is $1.80, which is $.36 cent each, and The cost of 4 markers and 6 pencils is $2.90 which is $.29 cent each.
3m+2p=1.8 (qeuation A)
4m+6p=2.9 (equation B)
"equation A" times "3":
9m+6p=5.4 (equation A')
"equation A'" - "equation B":
5m=2.5
[m=0.5]
substitude "m=0.5" into "equation A":
3(0.5)+2p=1.8
1.5+2p=1.8
2p=0.3
[p=0.15]
Related Questions
algebra - the cost of three markers and two pencils is 1.80 the cost of four ...
Math - How do you solve this question: The cost of 3 markers and 2 pencils is $1...
algebra - Rachael bought 12 pencils and 7 markers for $5.36, and later bought 8 ...
algebra - 3 pencils cost $.03 more than 2 pen,and 1 pen and 10 pencils together ...
Math - uh oh if pencils cost 20 cents and pens cost 30 cents each find the cost ...
math, help - how do i write the equations so i can solve it i will do the ...
Math - Leo has 8 more markers than colored pencils. He has a total of 32 markers...
math - 8 pens cost $4 more than 8 pencils. Harry paid $8 for 4 pens and 4 ...
ols - cost 10 pens and 5 pencils is100.then find the cost of 8 pens and 4 ...
math - a pencil, eraser and notebook together cost one dollar. a notebook costs ...
For Further Reading
