Express 15/648 into a percentage

I believe the answer is 2.31 %

Step-by-step explanation:

How I got this

Divide 15/648 to get:

0.0231481

Round to the nearest 10 to get:

0.0231

write as a decimal:

0.0231 x 100/100 to get:

2.31/100 which equals 2.31%

jml angle lkj & angle mj = lm

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.