chart in crystal report

I have Three tables

First one

RecordID(P)	Q_1	Q_2	Q_3	CityNAME(F)
1	23	23	23	ISL

Second table

ID (F)	A_1	A_2	A_3	CITYNAME(F)
1	45	23	4	ISL

TabID

CITYID(P)

CITYNAME

P FOR PRIMARY KEY AND F FOR FOREIGN KEY Now I want to show a chart showing TWO BARS First BAR SHOULD SHOW THE SUM OF (Q_1+Q_2+Q_3) and second line bar shoud show (SUM(A_1+A_2+A_3) inclusive all rows in both the tables , how to show that chart , if i am using formula field then how to give parameter to formula field in crystal report CR13.