That is how u work the problem
Answer:
8, 4, 0, -1
Step-by-step explanation:
<u>Answer:</u>
Ayden solved 18 maths problems and read 36 pages
<u>Explanation:</u>
Let x represent the number of maths problems Ayden solved
y represent the number of pages he read
According to the question,
3x + 1y = 90
y = 2x as no. of pages he read is twice the number of math problems
Substituting,
3x + 2x = 90
Solving for x, x = 18
So, Ayden solved 18 maths problems
Putting the value in equation y = 2x,
y = 36
So, Ayden read 36 pages
You don't really need the I = prt formula to solve this problem.
Try this:
Let x = amount loaned at 8% and ($12,000 - x) = amount loaned at 18%
Write the equation: (change the percents to decimals: 8% = 0.08 and 18% = 0.18)
(0.08)x + (0.18)($12,000 - x) = $1,000
This expresses the total amount of earned interest in terms of the amounts of the loan, x and ($12,000 - x}.
0.08x + $2,160 - 0.18x = $1,000 Simplify and solve for x.
-0.1x = -$1,160 Divide both sides by -0.1
x = $11.600 The amount loaned at 8% interest.
see if this help
I tried my best to explain it...dm me if you still don’t understand
Hope this helped :)