Step 1
Use the ratio of the number to the percentage to get the required answer.
Where,
Step 2
Get the required answer
The number of students that got B or a better grade on the test = 19 students rounded to a whole number.
Targeted 10
1 answer:
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For this case we propose a system of equations:
x: Let the variable representing the length of the longer piece
y: Let the variable representing the length of the shorter piece
According to the statement data we have:
Substituting the second equation into the first we have:
Thus, the shorter piece is 30 cm.
Thus, the longer piece is 70 cm.
Answer:
The longer piece is 70 centimeters.