The original meal cost will be $16.67.
What is Percentage?
A relative value indicating hundredth part of any quantity is called percentage.
Given that;
Tom left a $2.50 tip after eating his meal at a restaurant.
And, He tipped 15%.
Now, Let the original meal cost = $x
Then, we can formulate;
15% of x = 2.50
Solve for x as;
15% of x = 2.50
15/100 × x = 2.50
15x = 2.50 × 100
15x = 250
x = 16.67
Thus, The original meal cost will be $16.67.
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Answer:
$16.67
Step-by-step explanation:
Think of it like this. $2.50=15% of x, where x is the cost of his meal.
2.5=0.15x The given equation
250=15x Multiply both sides by 100
16 2/3=x Divide both sides by 15.
x= 16.66666666666666
Approximately 16.67.
b. Use expressions for the length and width to write an inequality for the
perimeter, on the basis of the given information.
c. Solve the inequality, clearly indicating the width of the rectangle.
Part A
w = width
L = length
L = w+8 since the length is 8 mm longer than the width
====================================================
Part B
P = perimeter of rectangle
P = 2*(L+W) = 2L + 2W
We want the perimeter to be more than 32 mm, so we want P to be greater than 32
This means we write P > 32
Replace P with either 2(L+W) or 2L+2W. I'll pick 2L+2W
So we go from
P > 32
to
2L+2W > 32
After this, replace L with W+8 (refer to part A above)
We now have
2(W+8) + 2W > 32
====================================================
Part C
Let's solve the inequality found in part B to get...
2(w+8) + 2w > 32
2w + 16 + 2w > 32
4w + 16 > 32
4w + 16-16 > 32-16 ....... subtracting 16 from both sides
4w > 16
4w/4 > 16/4 ......... dividing both sides by 4
w > 4
Answer : 350
Step-by-step explanation: