Charles and Lisa were having a watermelon eating contest. They ate twelve slices of watermelon between the two of them. Lisa ate two times as many slices of watermelon than Charles. How many slices of watermelon did Lisa eat? A. 16 B. 12 C. 8 D. 4

8

Step-by-step explanation:

let x represent the number of of watermelon slices Charles ate.

2x+x=12

x+x+x=12

3x=12

3x/3=12/3

x=4

Charles ate 4 watermelon slices

If Lisa ate twice the amount Charles ate, that would mean she ate 8.

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!