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B. Problem Solving 1. A 30 year old Father has a 4 year old son. In how many years will be the father thrice as old as his son. 2. The sum of two numbers is 23 and their difference is 5. Find the numbers. 3. Out of 55 students in a mathematics class, it was found out that:Act #2 20 enrolled in Trigonometry 24 enrolled in Calculus 8 enrolled in Trigonometry and Calculus 5 enrolled in Trigonometry and Statistics 10 enrolled in Calculus and Statistics 3 enrolled in Trigonometry, Calculus and Statistics 4 did not enroll in Trigonometry, Calculus and Statistics Show it by drawing venn diagram and answer the following. How many students enrolled in: a. exactly one subject b. at least 1 subject c. at most 2 subjects d. at least three subjects e. Tor S f. C or S but not T g. S but not T or C h. C only i. T and C j. T and S but not C