Question 70769
S1=2/3*S2
S2=2/3*S3
S1+S2+S3=95
2/3*S2+2/3*S3+S3=95
2/3(2/3*S3)+2/3*S3+S3=95
4/9*S3+2/3*S3+S3=95
(4*S3)/9+(2*S3)/3+S3=95
(4*S3+2*3*S3+9*S3)/9=95
(4S3+6S3+9S3)/9=95 ADD THE LEFT HAND TERMS & CROSS MULTIPLY
19S3=855
S3=855/19
S3=45 RDS. FOR THE THIRD (LONGEST) SIDE.