Oh, dude, if you bought 3 gross of pencils, you would have 432 pencils. Yeah, that's right, a gross is 144 pencils, so just multiply 144 by 3 and boom, you've got yourself a whole lot of pencils. Like, who even needs that many pencils, am I right?
432 = 3 x (12 x 12) = 3 x 144 = 3 gross
$25.60
3 pencils for 1.65 implies that pencils are 1.65/3 = 0.55 each. Then 7 are 7*0.55 = 3.85
The total number of rolls, R, is R = 5p + 3
Oh, dude, if you bought 3 gross of pencils, you would have 432 pencils. Yeah, that's right, a gross is 144 pencils, so just multiply 144 by 3 and boom, you've got yourself a whole lot of pencils. Like, who even needs that many pencils, am I right?
A gross is a dozen dozen (12*12) so if you bought 3 gross you would get 12*12*3 = 432 pencils
432 = 3 x (12 x 12) = 3 x 144 = 3 gross
144*3=432
A gross (a dozen dozen) is equal to 144. Therefore you would have 432 pencils.
3x12x2=72
12
$25.60
35 cents/12 = 2.927 cents each bought at selling at ( 10/3) 3.333 cents 3.333 cents - 2.927 cents = 0.406 cents profit per pencil 0.406 cents * 66 pencils = 26.796 cents ( call it 27 cents profit on a sale of 66 pencils )
18 of them
4
15 pens. 5 pencils.