1/10 x + 70% x = 5/2
=>1/10 x + 70/100 x = 5/2
=>1/10 x + 7/10 x = 5/2
=>x.(1/10+7/10)=5/2
=>x.8/10=5/2
=>x.4/5=5/2
=>x=5/2:4/5
=>x=5/2.5/4
=>x=25/8
1/10x + 70% x = 5/2
=> 1/10x + 70/100 x = 5/2.
=> 1/10x + 7/10x = 5/2
=> x.( 1/10 + 7/10 ) = 5/2
=> x . 8/10 = 5/2
=> x . 4/5 = 5/2
=> x = 5/2 : 4/5
=> x = 5/2 x 5/4
=> x =25/8
1/10x + 70% x = 5/2
=> 1/10x + 70/100 x = 5/2.
=> 1/10x + 7/10x = 5/2
=> x.( 1/10 + 7/10 ) = 5/2
=> x . 8/10 = 5/2
=> x . 4/5 = 5/2
=> x = 5/2 : 4/5
=> x = 5/2 x 5/4
=> x =25/8