1. a sonning p foizi:
b=a*p/100
Misol. 300 sonining 15% ini toping.
Yechish:
b=300*15/100=45
Javob:45
2. p foizi b ga teng bo'lgan sonni topish:
a=b*100/p
Misol. 30% i 60 ga teng bo'lgan sonni toping.
Yechish:
a=60*100/30=200
Javob:200
3. b son a sonning necha foizini tashkil qilishini topish:
p=b*100%/a
Misol. 45 soni 50 ning necha foiziga teng.
Yechish:
p=45*100%/50=90%
Javob:90%.