Answer:
15
Step-by-step explanation:
The statement indicates that Daniel scored 3 points which represents 20% of his average points and from this information, you can use the rule of three to find his average point total which is the 100%:
3 points → 20%
x ← 100%
x= (3*100)/20
x= 15
Daniel's average point total is 15.
1) 2x+1x= 63
2) 3x= 63
3) 3x/3= 63/3
4) x= 21
5) 2(21)+1(21)=63
6) 42+21= 63
The 2 groups would be 42 to 21.
Answer:
The rate of the boat in still water is 40 miles per hour
The rate of the current is 10 miles per hour
Step-by-step explanation:
we know that
The speed or rate is equal to divide the distance by the time
Let
x ----> the rate of the current (miles per hour)
y ----> the rate of the boat in still water (miles per hour)
we have that
<em>going upstream </em>
----> equation A
<em>going downstream </em>
----> equation B
Solve the system of equations by elimination
Adds equation A and equation B
<em>Find the value of x </em>
therefore
The rate of the boat in still water is 40 miles per hour
The rate of the current is 10 miles per hour
I don’t know what do you mean
she could do multiplication AND division