If a national event is attended by 1,500 people and 70% of them are adults, how

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Question: If a national event is attended by 1,500 people and 70% of them are adults, how many are children? (2020)

Options:

Correct Answer: 450

Exam Year: 2020

Solution:

Number of adults = 70% of 1,500 = 0.7 * 1,500 = 1,050. Number of children = 1,500 - 1,050 = 450.

If a national event is attended by 1,500 people and 70% of them are adults, how many are children? (2020)

If a national event is attended by 1,500 people and 70% of them are adults, how many are children? (2020)

Step 1: Find the total number of people at the event, which is 1,500.
Step 2: Calculate the number of adults by finding 70% of 1,500. This is done by multiplying 0.7 by 1,500.
Step 3: Perform the multiplication: 0.7 * 1,500 = 1,050. This means there are 1,050 adults.
Step 4: To find the number of children, subtract the number of adults from the total number of people: 1,500 - 1,050.
Step 5: Perform the subtraction: 1,500 - 1,050 = 450. This means there are 450 children.

Percentage Calculation – Understanding how to calculate a percentage of a total number.
Subtraction – Using subtraction to find the remaining quantity after calculating a part of the total.