Question

if you are maths genious then solve question no.13

Answer 1

8*(x-5)=3x
ans: x=8

2(x-5)*8=40
ans: x=2.5

Answer 2

Hey Mate !!

i) Given,

$area \: = 3x$

length and breadth = x - 5 & 8cm

Area of rectangle = l × b = 3x

(x - 5) × 8 = 3x

8x - 40 = 3x

8x - 3x = 40

5x = 40

x = 40/5

x = 8cm

ii) perimeter of rectangle = 2 ( l + b ) = 40cm

2( x - 5 + 8 ) = 40

2( x + 3 ) = 40

2x + 6 = 40

2x = 40 - 6

x = 34/2

x = 17cm


HOPE THIS HELPS U...