A group of students went out for lunch
after their examination. They were to
share the expenses equally. The total bill
was R200. Ten of the students did not
have any money, so each of the others
had to pay an extra R1. Determine the
number of students in the group.

number sof student of the group is 50

Step-by-step explanation:

let the number students be x

total bill is Rs 200

each student will pay =200/x

now 10 students do not have the money

so x - 10 students will pay the bill of Rs 200

according to the problem

= + 1

or, - = 1

or, 200 ( - ) = 1

or, 200() = 1

or, 200 X 10 = x(x-10)

or, - 10x - 2000 = 0

or, - 50x +40x - 2000 =0( using middle term factor)

or, (x - 50) (x+40) = 0

x = 50 ( x = -40 for number of students it is not possible)

see attached

step-by-step explanation:

given the function as;

write the equation replacing f(x) with y

form   and fill a table containing values of y with corresponding values of x

you can take a range for   values of x as -3≤x≤3

solving for x=-3

for x=-2

repeat the same procedure to get the values of y for the remaining ,x=-1 to x=3

plot the values of y against values   of x and obtain the following graph