Sally spent $15 on stickers and $15 on lollipops. If the stickers were $1.50 each and the lollipops were $0.75 each, how many of each item did she purchase?
Stickers = 15 / 1.5 = 10
Lollipops= 15 / 0.75 = 20
Ana downloaded pictures. Each picture had a file size of 2.4 megabytes. What is the total file size in megabytes of 6 of these pictures?
To figure out how many stickers and lollipops Sally purchased, we can set up a system of equations based on the given information.
Let's assume Sally bought x stickers and y lollipops.
According to the problem, the cost of the stickers is $1.50 each. So the total cost of the stickers is 1.50 * x.
Similarly, the cost of the lollipops is $0.75 each. Therefore, the total cost of the lollipops is 0.75 * y.
We also know that Sally spent a total of $15 on stickers and $15 on lollipops, so we can set up two equations:
Equation 1: 1.50 * x = 15
Equation 2: 0.75 * y = 15
Now, we can solve this system of equations to find the values of x and y.
For Equation 1, we divide both sides by 1.50 to isolate x:
x = 15 / 1.50
x = 10
For Equation 2, we divide both sides by 0.75 to isolate y:
y = 15 / 0.75
y = 20
Therefore, Sally purchased 10 stickers and 20 lollipops.