A jewelry box has a length of 3 1/2 units, a width of 1 1/2 units, and a height of 2 units. What is the volume of the box in cubic units?

10 1/2 or 10.5

Step-by-step explanation:

V=l*w*h

Volume = length * width * height

length = 3 1/2 = 3.5

width = 1 1/5 = 1.5

height = 2

input the values V = 3.5 * 1.5 *2

multiply the first two numbers 3.5 * 1.5 = 5.25

multiply the first result by the third number 5.25 * 2 = 10.5

Volume = 3.5 * 1.5 *2= 5.25 * 2 = 10.5 = 10 1/2

3 1/2 * 1 1/5 * 2 = length * width * height = Volume = 10 1/2

Volume = 10 1/2

9

Step-by-step explanation:

Call the Total Amount of money he had X.

Amount he used to buy pens: 3/8X

Amount of money left after buying pens: X - 3/8X = 5/8X

Amount he used to buy notebooks: 2/5 * 5/8X = 1/4X

1/4X or 2/8X for 2 notebooks, so if he spent 3/8X for notebooks, he would get 3 notebooks.

As a notebook cost 3 times a pens, so for 3/8X money, he bought 9 pens.