Mary and Kyle together sold 225 candy bars for a fund raiser. Kyle sold twice as many candy bars as Mary. How many candy bars did Kyle sale?

How many candy bars did Mary sale?

Kyle sold 150 candy bars and Mary sold 75.

Step-by-step explanation:

the equation you want to use is 2x + x = 225.

the 2x is for Kyle and the x is for Mary.

then you can simplify to make it 3x = 225, divide both sides by 3 which gives you an x value of 75, and then you plug it into the original equation, which gives you:

2x + x = 2(75) + 75 = 225

0.02040816326

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb