Answer:
The age of the person who walked in the room is 44.
Step-by-step explanation:
The original mean age is 38 which means the total ages combined divided by the 5 people.
5 people x 38 (the mean age) = x
x = Total ages combined
x = 190 years old
Then another person came in, now totaling 6 people, and the mean age changed to 39 years old, an increase.
6 people x 39 (the new mean age) = y
y = Total ages combined
y = 234 years old
So, we are trying to figure out the age of the new person who came in. We have to subtract the new total age (y) by the original total age (x).
y - x = Age of new person in room
234 years old - 190 years old =
44 years old
Answer:
She purchased 10 tickets.
Step-by-step explanation:
She spent $21.45
x represents the amount of tickets she purchased.
So,
0.75x+4.95=21.45
If we solve for x, then we know how many tickets she got.
0.75x + 4.95 - 4.95 = 12.45 - 4.95
0.75x = 7.5
x = 10
So, she bought 10 tickets
Answer:
She earned $959.2 last week.
Step-by-step explanation:
This question can be solved using a rule of three.
Base:
$500.
On commissions:
She earns 8.2% on commissions.
She sold $5,600, which is 100% = 1. How much is 8.2% = 0.082?
x - 0.082
5600 - 1
x = 5600*0.082 = 459.2.
She earns $459.2 on commissions.
Total:
500 + 459.2 = $959.2
She earned $959.2 last week.
It’s automatically the first one, because a non-dotted line means it can be equal to, and it’s shaded up meaning it’s greater than.