1.) C is the correct choice
4.) B is the correct choice
To find percentage: divide the given value by the total and multiply by 100
546/1300 x 100 = 42%
Easy.
2x + 3x
2x + 3x
2x ( 1 + 3x / 2x )
2x ( 1 + 1.5 )
2x ( 3 )
6x
or
2x ( 3 )
or
3x ( 2 )
That's it.
Hope helps ...........
