Question

Ramapada has just enough money to purchase
either 30 pens or 50 pencils. He decides to spend
only 80% of his money and buys 10 pens. At the
maximum, how many pencils can he buy with
the remaining money that he has?
(a) 23
(b) 24
(c) 25
(d) 26​

Answer 1

Given:

Ramapada has just enough money to purchase either 30 pens or 50 pencils. He decides to spend  only 80% of his money and buys 10 pens.

To find:

How many pencils can he buy with the remaining money?

Solution:

For the calculations to be easy, let initial money with Ramapada was $150x$.

Number of pens that can be bought = 30

So, price of each pen = $\frac{150x}{30} =5x$

Number of pens that can be bought = 50

So, price of each pen = $\frac{150x}{50} =3x$

Now, it is given that he decides to use only 80% money.

i.e. $150x\times \frac{80}{100} =120x$

Given that 10 pens bought.

Money used to buy 10 pens = $10 \times 5x =50x$

Money left = $120x-50x=70x$

Number of pencils that can be bought with $70x$ = $\frac{70x}{3x} \approx 23$

So, correct answer is (a) 23.

Answer 2

Answer:

the correct answer is a 23... . .