Question 675651: at a fruit stand,apples can be purchased for $0.15 each and pears for $0.20 each.at these rates a bag of apples and pears was purchased for $3.80.if the bag contained exactly 21 pieces of fruit how many were pears?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! at a fruit stand,apples can be purchased for $0.15 each and pears for $0.20 each.at these rates a bag of apples and pears was purchased for $3.80.if the bag contained exactly 21 pieces of fruit how many were pears?
--------------------------
Quantity Equation: a + p = 21
Value Equation::: 15a+20p = 380 cents
-------------------------------------------
Multiply thru top equation by 3
Divide thru bottom equation by 5
------
3a + 3p = 63
3a + 4p = 76
-----
Subtract and solve for "p":
p = 13 (# of pears)
------
Solve for "a" using a + p = 21
a + 13 = 21
a = 8 (# of apples)
========================
cheers,
Stan H.
=================
|
|
|
