exam Maths Puzzle Numerical Ability

A maintenance crew requires between 30 min and 45 min to prepare an aircraft for its next flight. How many aircraft can this crew prepare for flight in a 6-hour period of time?

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exam Other Question

Determine whether the following is rational or irrational:

4-sqrt16

Thank you! A dentist invested a portion of $15,000 in a 7% annual simple interest account and the remainder in a 6.5% annual simple interest government bond. The two investments earn $1020 in interest annually. How much was invested in each account?