SOLUTION: 1) The length and breadth of a square are increased by 30% and 20%, respectively. The area of the rectangle so formed exceeds the area of the square by 2) The sum of three numbers

Algebra ->  Finance -> SOLUTION: 1) The length and breadth of a square are increased by 30% and 20%, respectively. The area of the rectangle so formed exceeds the area of the square by 2) The sum of three numbers      Log On


   

Question 1080998: 1) The length and breadth of a square are increased by 30% and 20%, respectively. The area of the rectangle so formed exceeds the area of the square by
2) The sum of three numbers is 98. If the ratio between first and second be 2:3 and that between second and third be 5:8,then the second number is
Answer by amfagge92(93) About Me  (Show Source):
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2- Let the numbers be x,y,z
⇒x%2By%2Bz=98..i
x:y=2/3,y:z=5/8
x=2y/3,z=8y/5
subtitute x and y in eqn i
2y%2F3%2By%2B8y%2F5=98
SOLVING I HAVE
10y%2B15y%2B24y=1470
49y=1470, y=30
∴ the second number is 30
check:x=20,y=30,z=48
20+30+48=98