Answer:
28 cupcakes
24 brownies
56 cookies
Step-by-step explanation:
Since the question did not tell us what to look for, we can as well look for the amount of each treat used
Let x be the amount of cupcakes
Let y be the amount of brownies
Let z be the amount of cookies
If Mari had 4 more cupcakes than brownies, then;
x = y+4
y = x-4.....1
Also if she had twice as many cookies as cupcakes
z = 2x..... 2
If she had 108treats in total, then;
x + y+z = 108 ..... 3
Substitute 1 and 2 into 3;
x + (x-4)+2x = 108
2x+2x-4 = 108
4x-4 = 108
4x =108+4
4x =112
x = 112/4
x = 28
Hence she has 28cupcakes
Get y
From 1: y = x-4
y = 28-4
y = 24
Hence she had 24 brownies
From 2: z = 2x
z = 2(28)
z = 56
She had 56 cookies
Answer:
4 minutes.
Step-by-step explanation:
There are three trains that Rachel has to take to go to her job. The total time is taken by her, on average, 1 hour and 20 minutes i.e. (60 + 20) = 80 minutes.
In his journey, she walks for 15 minutes and a train journey for about 53 minutes.
Then the total waiting time for the trains is (80 - 53 - 15) = 12 minutes.
Therefore, the average waiting time, in minutes, at each of the three train stations will be 
minutes. (Answer)
Answer:
$556
Step-by-step explanation:
4+7+6+10+8=35
35x12=420
4x14=56
5x16=80
420+56+80=556
Answer:
The answer is C or x=-4.
Step-by-step explanation:
I hope this helps!
Answer:
It is correct according to the laws
