<span>So we want to know how many individual heels did the shoemaker bought if he bought 30 pairs of heels. So to get to the answer we must know that one pair of heels is equal to two individual heels. So now we can calculate the individual number of heels: 30 pairs * 2 = 60 individual heels. </span>
1. The amount will remain the same because 1/8*8/1*x=1x
2. 15*5280/3600=ft per second
25% = 0.25
40 / 0.25 = 160
40 is 25% of 160.
There are 160 children in the club.
(x-5)(x+2)=0
roots: x=5 and x= -2
see attached photo for steps