
number of marks available = 140
percentage secured = 70%
therefore marks secured =

hope helpful~
The price increase was $12.
60
x 0.2
---------
12
Hope this helped!
Six million, one hundred seventy-three thousand, two hundred fifty three
Hence,the option is B. If you have any doubts plzz lemme know.
<span>The method of solving "by substitution" works by solving one of the equations (you choose which one) for one of the variables (you choose which one), and then plugging this back into the other equation, "substituting" for the chosen variable and solving for the other. Then you back-solve for the first variable.</span>