1.65 x 3 = 4.95
A gross is equal to 144, so 3 gross of pencils would be calculated as 3 x 144, which equals 432 pencils. Therefore, if you bought 3 gross of pencils, you would indeed have 432 pencils.
3 hrs, divide 165 by 55
They are 165/3-2, 165/3 and 165/3+2 = 53, 55 and 57.
3
165
3 pencils for 1.65 implies that pencils are 1.65/3 = 0.55 each. Then 7 are 7*0.55 = 3.85
55
Cause pencils are cool :3
A gross is equal to 144, so 3 gross of pencils would be calculated as 3 x 144, which equals 432 pencils. Therefore, if you bought 3 gross of pencils, you would indeed have 432 pencils.
3 hrs, divide 165 by 55
They are 165/3-2, 165/3 and 165/3+2 = 53, 55 and 57.
The prime factors of 165 are 3, 5, 11 165 = 3*5*11
A gross is equal to 144 items. Therefore, if you bought 3 gross of pencils, you would have 3 x 144, which equals 432 pencils.
If you can buy 3 pencils for 45 cents, the cost per pencil is 15 cents (45 cents ÷ 3 pencils). Therefore, for 5 pencils, the cost would be 75 cents (5 pencils × 15 cents per pencil).
4
3
5 of the other boxes, 3 contain only red pencils, 1 contains only black pencils, and 3 contain mixed pencils. I came to this answer with this formula: x=12- [(6-3)+(4-3)]