Solution: Ten less than four times a certain number is 14. Determine the number

Solution: If their sum is 135, what are the numbers?

Solution: How to represent a two digit number?

Solution: How much water must be evaporated from 10 kg solution?

Solution: How much of each is needed?

Solution: How many ounces of the 60% pure gold must be used?

Solution: How many of each strength must he use to produce mixture of 60 cubic meters?

Solution: What is the percent concentration of salt in the mixture?

Solution: How much earth can each power shovels remove in 1 hour working alone?

Solution: How long will it take both crews to finish the same job, working together?