1. 308 ÷ 14
Quotient = 22
Remainder = 0
2. 6474 ÷ 78
Quotient = 83
3. 3713 ÷ 47
Quotient = 79
The answer is in the image
The solution is in the following image
y=2x+15
where y=Value of coin
x=Age in years
Value of coin after 19 years=2*19+15
=$53
Therefore, Value after 19 years=$53
The solution is given in the image below
30% of 420 are first year students
first year students = (30/100 )*420
=126 students
Student who are not in first year = 420-126
=294 students
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