Question

Mrs.mayuko paid $40.68 for 3 kg of shrimp. whats the cost of kilogram of shrimp?

Answer 1

Each kilogram of shrimp costs $13.56.

Further Explanation

This problem can be solved using ratios and proportion. It can be solved using an equation with one variable.

STEP 1: Sort the given.

To solve, first we must sort the given in the problem:

cost of 3 kg of shrimp = $40.68

STEP 2: Represent unknown as variable.

If we let x be the cost of one kilogram of shrimp, we can represent the given above using the equation below:

$\boxed {3x = 40.68}$

STEP 3: Solve for the variable.

Then we solve for x to get the price per kilogram. To do this, we divide both sides of the equation by 3 to cancel the coefficient of x:

$3x = 40.68\\\frac{3x}{3} = \frac{40.68}{3}\\\boxed {x = 13.56}$

Therefore, the price of one kilogram of shrimp is $13.56.

STEP 4: Check answer.

To check if the answer is correct, we substitute the value of x into the equation and see if we get the price of 3 kilograms of shrimp:

$3x \stackrel{?}{=} \ \ 40.68\\3 \times \ \ 13.56 \stackrel{?}{=} \ 40.68\\\ 40.68 = \ 40.68$

Therefore, our answer that one kilogram of shrimp costs $13.56 is correct.

Learn More

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Keywords: ratio, proportion, variable, equation

Answer 2

Just divide $40.68 by 3 and get $13.56