Tag: math & puzzles

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A manufacturer can save x dollars per unit in production costs by overproducing in certain seasons. If storage costs for the excess are y dollars per unit per day (x > y) , which of the following expresses the maximum number of days that n excess units can be stored before the storage costs exceed the savings on the excess units?

How many gallons of water must be mixed with 1 gallon of a 15-percent salt solution to obtain a 10-percent salt solution?

The average of 7 numbers of a set is 33, if a new number ‘k’ is included in the set, then the average becomes 35. Col A: The value of k Col B: 47 which column is greater?

Col A: Standard Deviation of numbers having an average 40 Col B: Standard Deviation of numbers having an average 35 Which column is greater?

Helpers are needed to prepare for the fete. Each helper can make either 2 large cakes or 35 small cakes per hour. The kitchen is available for 3 hours and 20 large cakes and 700 small cakes are needed. How many helpers are required

A cubical block of metal weighs 6 pounds. How much will another cube of the same metal weigh if its sides are twice as long?

6 people meet for a business lunch. Each person shakes hands once with each other person present. How many handshakes take place?

What is the simplified result of following the steps above in order? (1) add 5y to 2x (2) multiply the sum by 3 (3) subtract x + y from the product