Saturday

August 30, 2014

August 30, 2014

Posted by **Smartypants** on Saturday, June 18, 2011 at 12:51am.

(ii)the selling price of an orange

When he had sold all except 20 of the oranges, he found he had received $28.

(iii) form an equation in x and show that it simplifies to xsquare + 20x -12000= 0

- Math -
**Henry**, Saturday, June 18, 2011 at 3:29pm1. Cost = $30/X per orange.

2. Selling Price = (30/X+0.05)per orange.

3. (30/X + 0.05)(X - 20) = 28,

Multiply the 2 binomials and get:

30 - 600/X + 0.05X - 1 = 28,

Multiply both sides by X:

30X - 600 + 0.05X^2 - X = 28X,

0.05X^2 + 29X - 600 = 28X,

0.05X^2 + 29X - 28X - 600 = 0,

0.05X^2 + X - 600 = 0,

Multiply both sides by 20:

X^2 + 20X - 12000 = 0.

- Math -
**Raymond**, Saturday, June 18, 2011 at 5:15pmBut your solution of this problem doesn't show the stuff that any real businessman would want to know. How many oranges? What is my unit cost in actual cents not formula? When will I be in profit? etc

- Math -
**Click6**, Saturday, June 18, 2011 at 11:00pmThanks a lot Henry! Your working is right!

Btw, thank too Raymond for helping me out, I appreciate it a lot (:

- Math -
**Click6**, Saturday, June 18, 2011 at 11:02pmAppreciate both of you who help me! Thanks!!!!!

- Math -
**Click6**, Saturday, June 18, 2011 at 11:56pmBtw Henry, why multiply by 20 in the end? Is it because he had sold all except 20 of the oranges?

**Related Questions**

Math algebra (urgent!) help me! Thanks a lot!! (; - Mr lol bought x oranges for...

Math - The question is: A Woman is selling an (X) amount of Oranges The first ...

Maths algebra - Wilma went to the local market and bought 3 lemons and 5 oranges...

Math - Bosley's Pet Foods buys dog kibbl for $19.50 per bag, less 40%. The store...

Math - Part 1- Mr. Santiago bought 10 crates of oranges. There were 50 oranges ...

Math - Mr.Santiago brought 10 crates of oranges. There were 50 oranges in each ...

math(urgent) - During a Merdeka Day celebration,a furniture company marked down ...

maths - Jill bought 10 manoges and 5 oranges. Chris bought 5 mangoes and 10 ...

Marketing Math - markup/mark down - A clothing retailer purchased a line of fall...

math - At a boutique,an evening gown is marked at a profit of 40% on the cost ...