Let the present age of student be x
Present of teacher will be 4x
After 20 years,
Age of student = x + 20
Age of teacher = 4x + 20
According to the given condition after 20 years,
x + 20 = (4x + 20)/2
x + 20 = 2x + 10
2x - x = 20 - 10
x = 10
So student's present age is 10 years while teacher's is 4 x 10 i.e 40 years.
Hope This Helps You!
Area = PI x r^2
area = 3.14 x 6^2
area = 3.14 x 36
area = 113.04 square yards
round the answer if needed.
Answer:
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s = side length of square
L = s-6 = width of rectangle (shorter side of rectangle)
W = s+1 = length of rectangle (longer side of rectangle)
multiply the length and width to get the area A
A = L*W
A = ( L ) * ( W )
A = (s-6)*(s+1) .............. substitution
A = s^2 + s - 6s - 6 ... use the FOIL rule
A = s^2 - 5s - 6 ......... combine like terms
<h3>Final Answer: s^2 - 5s - 6</h3>
186-42 = 144
Original price is 288 (5th option)
Equation is 0.5x + 42 = 186 (last option)
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