Janice and her dad are building a treehouse. Her dad bought a box of 155 nails for 3.10andaboxof85screwsfor7.65. How much more do screws cost per piece?

$0.07

Step-by-step explanation:

nails = 3.10/155 = 0.02/piece

screws = 7.65/85 = 0.09/piece

0.09 - 0.02 = 0.07

7 ft 6 in means 7 1/2, because 6 in is 1/2 of a foot. 7 ft 8 in means 7 2/3 because 8 in is 2/3 of a foot. 23/3 = 7 2/3. 15/2 = 7 1/2.

23/3   *   15/2   = 57 1/2

step-by-step explanation:

actually your concept is wrong

step-by-step explanation:

150% of x =300

150x=300×100

x=(300×100)÷150

x=200