Think of investments. If you were to invest $100 into a company and receive $200 dollars, then you would have made $100 in profit, which is 100% of your initial amount. So, if you were to invest $100 and receive $250 dollars in profit, then you would have made an extra $150, which is even more than your initial amount of $100. In this case, you would have made a 150% increase on your money.
<span>9d + d + 2d - 4 = 6d Add d to 9d 10d+2d-4=6d Add 2d to 10d 12d-4=6d Subtract 12d from both sides -4=-6d Divide -6 on both sides Final Answer: 4/6 or 2/3 *Both answers are equivalent to each other.</span>
