Q2 - qz#5 -PB - Probability - 11-15-24

Front

What is the formula to calculate sales tax?

Back

Sales Tax = Purchase Amount × Sales Tax Rate.

Front

If Mrs. Ray's groceries total $35.50 and the sales tax is 4.5%, how much will she owe in total?

Back

Total Amount = $35.50 + ($35.50 × 0.045) = $37.10.

Front

How do you calculate the mean average of a set of grades?

Back

Mean Average = (Sum of all grades) / (Number of grades).

Front

What is the mean average of the grades 50, 70, 88, 70, and 88?

Back

Mean Average = (50 + 70 + 88 + 70 + 88) / 5 = 73.2.

Front

What is the formula for calculating simple interest?

Back

Simple Interest = Principal × Rate × Time.

Front

If Ann puts $379.98 in a bank account earning 4.05% interest for 3.79 years, how much interest will she earn?

Back

Interest = $379.98 × 0.0405 × 3.79 = $58.33.

Front

What is the formula to calculate the total amount in a savings account after interest?

Back

Total Amount = Principal + Interest.

Front

If Tom deposits $300 at 4% interest annually, what will be the total amount after 9 months?

Back

Total Amount = $300 + ($300 × 0.04 × 0.75) = $309.

Front

What is the probability of rolling a sum of 9 with two dice?

Back

There are 4 combinations to get a sum of 9: (3,6), (4,5), (5,4), (6,3). Total outcomes = 36. Probability = 4/36 = 1/9.

Front

What is the total number of outcomes when rolling two dice?

Back

Total Outcomes = 6 (sides of die 1) × 6 (sides of die 2) = 36.