Question

alans chocolate bar is 38% cocoa. if the weight of the chocolate bar is 77 grams, how many grams of cocoa does it contain? round your answer to the nearest tenth.
____ grams

Explanation:

Step1: Convert percentage to decimal

To find 38% of 77 grams, first convert 38% to a decimal by dividing by 100: \( 38\% = \frac{38}{100} = 0.38 \)

Step2: Multiply decimal by total weight

Multiply the decimal by the weight of the chocolate bar (77 grams) to find the amount of cocoa: \( 0.38 \times 77 \)
Calculate the product: \( 0.38 \times 77 = 29.26 \)

Step3: Round to the nearest tenth

The number 29.26 rounded to the nearest tenth is 29.3 (since the digit in the hundredths place is 6, which is greater than or equal to 5, we round up the tenths place).

Answer:

29.3