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18 less than a number, times 4 is equal to 30Consider a deck of cards. If you draw a single card, what is the probability that you draw a king or a queenThe difference between two positive numbers is 21. The larger number is 4 less than 6 times the smaller number. Find the two numbers.Find two consecutive even numbers whose sum is 126An investor places 20 000 in an account earning 4%p.a. simple interest.Find the value of the investment after 5 years.