Question

(C) 70 12. A lady buys some pencils for Rs. 3 and an equal number for Rs.6. She sells them for Rs. 7. Find her gain or loss%. (a) 20% (b) 40% (c) 45% (d) 25%​

Answer 1

Answer:

25%

Step-by-step explanation:

Given that, cost price of some pencils = Rs.3 and for other equal no. of pencils = Rs.3 and total selling price = Rs.7.

Let lady buys ‘n’ pencils for Rs.3.(type - 1)

And for ‘n’ pencils of other kind, she paid Rs.6(type - 2)

∴ she sold n + n = 2n pencils for Rs.7

Now, for type - 1 pencils -

Gain = selling price - cost price

Now, for type - 2 pencils -

Loss = cost price - selling price

⇒ Net gain % = Gain % - Loss %

= 25%

Answer 2

Answer:

25%

Step-by-step explanation:

Given that, cost price of some pencils = Rs.3 and for other equal no. of pencils = Rs.3 and total selling price = Rs.7.

Let lady buys ‘n’ pencils for Rs.3.(type - 1)

And for ‘n’ pencils of other kind, she paid Rs.6(type - 2)

∴ she sold n + n = 2n pencils for Rs.7

Now, for type - 1 pencils -

Gain = selling price - cost price

Now, for type - 2 pencils -

Loss = cost price - selling price

⇒ Net gain % = Gain % - Loss %

= 25%