**Question:**

A woman has 25p and 50p coins in her bag. If in all she has 40 coins which total ?12.75 then the number of 50p coins is?

X=29 y = 11

X=29, y=11

50p*11=5.50p,25p*29=7.25p.so 50p=11 and 25p=29

X coins of 25 p

Y coins 50p

Now x+y=40

N .25x+.50y=12.75

After solving eq. N

Ans: x=29

Y=11

Now,

X+y=40

25x+50y=1275

Solving the above two equations we get

X=29. Y=11

Let 50 p coins are x

25(40-x)+50x=1275

X=11

11 coin of 50p&29 coin of 25p