Answer:
A, C
Step-by-step explanation:
A. the distance traveled on a trip and the travel time YES
B. the distance remaining on a trip and the travel time NO
C. the amount of money spent and the the number of shirts bought YES
D. the height of an eighth-grade student and the time to complete a puzzle NO
E. the amount of money owed on a computer and the time making payments NO (the amount of money owed drops with each payment made)
You can write a system of equations, I'm pretty sure.
the first equation would be
10a+3f+.5c=100
and
a+f+c=100
For the first equation, its the price of each ticket that adds up to 100 tickets
For the second equation, its the amount of people that adds up to 100 people.
I'm pretty sure this is the route to go but I haven't solved it for myself (yet) I'll probably comment the answer if you need me to
Let the no. of girls be x and boys be y......
x/y=1/3
=>3x=y ...............(I)
now 4 boys leave the class is then
x/y-4=2/5
=>5x=2y-8
(I)=>5x=2(3x)-8
x=8
now 3x=y
=>y=24
therefore no. of girls is 8 and the no. of boy is 24..............
I have tried my best.....hope i helped............
