Question

Read the following case study and on the basis of it answer the following questions.
Ratan bought 3 notebooks and 2 pens for ₹80. His friend said that price of each notebook
could be ₹25. Then three notebooks would cost ₹75, the two pens would cost ₹5 and each
pen could be for ₹2.50.
Rohit also bought same types of notebooks and pens as Ratan. He paid ₹110 for 4
notebooks and 3 pens. Later, Ratan guess the cost of one pen is ₹ 10 and Rohit guess the
cost of one notebook is ₹30.

Q 3. From the linear equation in two variables from the Ratan’s purchase by taking cost of
one notebook as ₹x and cost of one pen as ₹y.
A. 3x + 2y = 80
B. 2x + 3y = 80 and 3x + 4y = 110
C. x + y = 80 and x + y =110
D. 3x + 2y = 110 and 4x +3y = 80
Q 4. From the linear equation in two variables from the Rohit’s purchase by taking cost of
one notebook as ₹x and cost of one pen as ₹y.
A. 3x + 4y = 110
B. x + y =110
C. 3x + 2y = 110
D. 4x+3y = 110
Q-5. which is the solution satisfying both the equations formed in Q-3 and Q-4
(a) x = 10, y = 20
(b) x = 20, y = 10
(c) x= 15, y = 15
(a) none of these

Answer 1

Answer:

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Step-by-step explanation:

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