Question

tammy has shown all her work for the following question.
decide if there is an error in tammys solution and if so, state
the first step that has the error.

find 40% of 20.
step 1: $\frac{20}{100}(40)$
step 2: 0.20(40)
step 3: 8

c) step 2
b) step 1
d) step 3
a) there are no errors.

Explanation:

Step1: Recall percent calculation rule

To find $p\%$ of $n$, use $\frac{p}{100} \times n$

Step2: Check Tammy's Step1

Tammy wrote $\frac{20}{100}(40)$, but correct form is $\frac{40}{100}(20)$

Step3: Verify error location

The first error occurs in Step1.

Answer:

B) Step 1