To solve this you can set up a proportion. If the original number is 100% 54 would be 108% of the original. (Since it was increased by 8%). 54-----108% x-------100% solving the proportion gives you 54 * 100= 108 * x x=...
To solve this you can set up a proportion. If the original number is 100% 54 would be 108% of the original. (Since it was increased by 8%). 54-----108% x-------100% solving the proportion gives you 54 * 100= 108 * x x=...
First you have to solve for one of the variables in terms of the other. Take one of the equations for example a+b=1000 and solve for a to get a=1000-b. Now you can substitute this expression into the other equation instead of a. 7a+15b=11504 becomes 7(1000-b)+15b=11504...