Question

Amit wants to buy a pencil and a sharpener. if the cost of sharpener is thrice of a pencil. he gave rupees 50 to the shopkeeper and he returned him rupees 20.find the cost of 1 pencil and 1 sharpener.
ANSWER WITH EXPLANATION I'LL MARK AS THE BRAINLIEST!! ​

Answer 1

$\huge\underline\mathrm{Question:-}$

• To find the cost of 1 pencil & 1 sharpner.

$\huge\underline\mathrm{Solution:-}$

• As told in QN cost of 1 sharpner is Thrice of pencil.
• So , Let the price of 1 sharpner be 3x & 1 pencil be x
• According to next statement , we can say that = 50-20=30
• From both conditions ... We can Form a Eqn -
• $3x + x = 30$

Solving the Eqn!

• $3x + x = 30$
• $4x = 30$
• $x = \frac{30}{4}$
• $x = 7.5$

Price of 1 pencil is 7.5 Rs.

Price of 1 sharpner that we assumed is 3x. So! We are going to put value of x in 3x.

• $3x$
• $3 \times 7.5$
• $22.5$

✩ Cost of 1 pencil is 7.5 Rs.

✩ Cost of 1 sharpner is 22.5 Rs.

Answer 2

Answer:

To find the cost of 1 pencil & 1 sharpner.

As told in QN cost of 1 sharpner is Thrice of pencil.

So , Let the price of 1 sharpner be 3x & 1 pencil be x

According to next statement , we can say that = 50-20=30

From both conditions ... We can Form a Eqn -

Solving the Eqn!

Price of 1 pencil is 7.5 Rs.

Price of 1 sharpner that we assumed is 3x. So! We are going to put value of x in 3x.

✩ Cost of 1 pencil is 7.5 Rs.

✩ Cost of 1 sharpner is 22.5 Rs.

Step-by-step explanation:

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