Question

Pamu has 20 paisa coins and 25 paisa coins in his pocket . If he has 60 coins in all totlling rs. 13.50 hoe many coins of each kind he have

Answer 1

Solution

let the number of 20 and 25 paise coins are X and y...

now..

condition 1

X+y=60.

4x+4y=240......(I)

condition 2

20x+25y=1350

=>4x+5y=270......(ii)

now ......from equation (I)...and ...(ii)..

4x+4y=240

4x+5y=270

____________

-y=-30=>y=30

and .....X=60-30=30

therefore the number of 20paise and 25 paise coins are of each 30pcs.......

Hope this helps you.....