Question
A lady has 25 p and 50 p coins in her purse. If in all she has 40 coins totalling 12.50, find the number of coins of each type she has.
Solution Let no. of 25p coins bers
Let no. of sop coins bery
Total amount =
{ 12.30 = 1250 p
OC
12
2
now
25x + sog
-6
25x + soy = 1250
Given that
o kety=40
@
In
© divide by 25
solving de » -
Kazy = 50
- x + y = 40
25p coins = 30
sop coins = 10
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