Smart Numbers

Official Guide practice (find these in your Official Guide or at www.gmatclub.com)

Try out the following problems with the strategy of picking smart numbers. Follow the principle of picking small numbers that fit the relationships, and be flexible about adjusting your smart numbers if you need to.

PS11906 A technician makes a round-trip

PS14250 City X has a population 4 times as great as the population of City Y,

On a certain day, orangeade was made by mixing a certain amount of orange juice

Mary’s income is 60 percent more than Tim’s income

PS07730 In Country C, the unemployment rate among construction workers

PS16122 Sixty percent of the members of a study group are women

When 2/9 of the votes on a certain resolution

The annual stockholders’ report for Corporation X 

Store N gives a 50 percent discount on the list price

When a certain stretch of highway was rebuilt and straightened