1.
A team’s average score in 8 games is 45. In the 9th game, they score 30. What is the new average?
2.
A 300 L solution has milk and water in a ratio of 5:1. How much water must be added to make the ratio 5:2?
3.
If 60% of tasks are reviewed by Emma and 40% by Liam, and their error detection rates are 1% and 2% respectively, what is the overall detection rate?
4.
A mixture costs $3.20 per kg. It is made by mixing two types of rice costing $4 and $2.5 per kg respectively. What is the ratio of the cheaper to the costlier variety?
5.
A person needs to run 80 km over 5 days. If the distance he runs each day differs by no more than 4 km, what’s the most he can run on Day 5?
6.
If the average of 7 consecutive even integers is 60, what is the largest integer?
7.
A company has 4 branches, each earning an average of $50,000 per month. If one branch closes and the remaining branches maintain the same total revenue, what is the new average monthly earning per branch?
8.
The numbers 4, 6, 7, 10, 12, and x are arranged in increasing order. If the average equals the median, what is x?
9.
A tank is filled over 4 days with daily inputs of 10L, 20L, 30L, and 40L. What is the average daily input?
10.
A company’s average production was 20 units for x months and 40 units for y months. If the overall average was 28 units, what is the ratio x : y?
