A stationer sold 1 dozen of pen at the rate of Rs.25 each and gained Rs.120 altogether. how much was the cost price of the pens

Rs.15

Step-by-step explanation:

The stationer sold 1 dozen of pens, meaning he sold 12 pens.

He gained Rs.120, meaning he gained Rs.(120/12) = Rs.10 for each pen.

Hence, the cost price was Rs.(25 - 10)

= Rs.15

Hope this helped!

4 puzzles in 3 hours

step-by-step explanation:

24

step-by-step explanation:

if it takes 8 pounds to make 12 divide 12 by 8 and you get 1.5, 1.5 x 16 = 24