Here’s your answer lemme know if it’s not clear
Joel = j, Mark = m, Sandra = s
j + m + s = 120
m = 3j
j = 1/2 s --> s = 2j
plug in (substitute) each letter to make it in terms of only j: j + m + s = 120
j + 3j + 2j = 120
6j = 120
6j/6 = 120/6
j = 20
now plug in for the j & s equation:
s = 2j = 2(20) = 40
Therefore Sandra has 40 coins!
A. x = 9 and x = 11 is the answer you are looking for
Hope I helped you ^^
Answer:
The second and fourth answer are correct
Step-by-step explanation:
Every millimeter on the map is equivalent to 20 miles on eartg
