If the teacher has 30 students and 10% left,how much students does she have now
2 answers:
Answer:
She has 27 students now.
Step-by-step explanation:
Given :
The teacher has 30 students
10% students left.
To find : how much students does she have now?
Solution :
Since we are given that teacher has 30 students .
And 10% of students left
⇒ 10% of 30
⇒
⇒
⇒
Thus, 3 students left .
She had 30 students . three students left.
So, now she have 30 - 3 = 27 students .
Hence she has 27 students now.
Step-by-step explanation:
Teacher has 30 students
10%decrease
So,decrease=10/100*30=3
So, decrease is 3 students
Hence remaining number of students = 30-3=27 students
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Step-by-step explanation:
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Answer:
2
Step-by-step explanation:
d.
16x-3= -48
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c.
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Answer:
3 3/7 or 24/7 mins
Step-by-step explanation:
Let total job = X
Jeff's rate = X/6
Bob's rate = X/8
Combined rate = X/6 + X/8
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T = X ÷ (7X/24)
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Shortcut:
T = product of individual times/sum of individual times
T = (6×8)/(6+8)
T = 48/14
T = 24/7
T = 3 3/7 mins
Answer:
20
Step-by-step explanation:
2x - 5 = x + 15
2x - x = 5 + 15
x = 20