Answer:
To find the total percentage Emily saved, we need to divide the savings by the total pre-sale cost. We know the pre-sale cost was $200 dollars, the pre-sale prices of both items combined. However, we do not know the absolute amount of money saved, as we are only given that information in percentages.
We will start by discovering the absolute amount of money saved.
Saving on dress: $150 × 40% = $60
Saving on jeans: $50 × 20% = $10
Total savings: $60 + $10 = $70
Total pre-sale cost: $150 + $50 = $200
Total savings in percent: 70/200
Cancel both the numerator and denominator by 2:
(70÷2)/(200÷2) = 35/100 = 35%
The correct answer is B