Eric has 48 bills valuing P1,500 to be deposited in a bank. If the bills consistedmof P20

& P50 bills, how many P50 bills does he have?

2 answers

number of P50 --- x
number of P20 ----48-x

their value:

50x + 20(48-x) = 1500

solve for x
20x+50(48-x)=1500
20x+2400-50x=1500
-30x=1500-2400
-30x=-900
-30 =-30
X=30