Question

Reema has enough money to buy 1 dozen pencil at rupees 2 per pencil how many pencils can She buy if the price of each is a)reduced by 50 Paise b)increased by one Rupee

Answer 1

REFER TO THE ATTACHMENT

MATE MARK ME BRAINLIEST

Answer 2

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Let price of pen wa Rs. X and Pencil was Rs. Y.

So,

X + Y = 35 ------------------------------ (1)

SP of Pen,

= X + 20% of X = 1.2X

SP of Pencil,

= Y - 10% of Y = 0.9Y

Man gains Rs. 4 in transaction.

It means,

Total SP = 35 + 4 = 39

Now,

1.2X + 0.9Y = 39 --------------------------- (2)

On multiplying euqation (1) by 1.2, we get,

1.2X + 1.2 Y = 42 --------------------------- (3)

Equation (3) - (2)

1.2X + 1.2Y - 1.2X - 0.9Y = 42 - 39

0.3Y = 3

Y = 10.

CP of Pencil = Rs. 10

CP of Pen = 35 - 10 = Rs. 25.

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