7. For this one, we need an equation. Lets make x = the price of the computer. Since the price of the printer is 30% the price of the computer, we can make that .3x, because a number multiplied by .3 will give you 30% of your original number. So, our equation will be:
[tex]x + .3x = 2028 \\ 1.3x = 2028 \\ x = 1560[/tex]
Since x is the cost of the computer, you have your answer right there. The computer costs $2,028.
8. For this one we're going to need a proportion, but first we need to find out how much of the percentage of seeds Cliff planted.
% of seeds planted per person:
Ali - 40
Ben - 45
Cliff - x
All percentages add up to 100, so we'll make an equation to figure this out:
[tex]40 + 45 + x = 100 \\ 85 + x = 100 \\ x = 15[/tex]
Therefore, Cliff planted 15% of the seeds. Since Cliff planted 15% of the seeds, and he planted 87 total, 15% of our total number of seeds planted is 87. We can now make a proportion to figure out how many seedlings were planted all together.
[tex] \frac{87}{x} = \frac{15}{100} [/tex]
We can now cross multiply in order to get a solvable equation:
[tex]8700 = 15x \\ x = 580[/tex]
The total number of seedlings planted was 580.
Sorry if this is confusing at all, hope I helped!
