Alex and Nick collect baseball cards. Alex has three more than twice as many cards as Nick. Together they have 27 cards. How many cards does Alex have? A. 8
B. 12
C. 17
D. 19

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?

Afactory buys 10% of its components from suppliers b and the rest from supplier c. it is known that 6% of the components it buys are faulty. of the components brought from suppliers a,9% are faulty and of the components bought from suppliers b, 3% are faulty. find the percentage of components bought from supplier c that are faulty.

The probability that a tutor will see 0, 1, 2, 3, or 4 students is given below determine the probability distribution's missing value.