Let the son's present age be x years. Then the father's present age = 3x. Four years ago, their ages were: Father = 3x - 4, Son = x - 4. According to the problem: 3x - 4 = 5(x - 4) 3x - 4 = 5x - 20 20 - 4 = 5x - 3x 2x = 16 x = 8. Now calculate their present ages: Son = 8 years Father = 3 * 8 = 24 years Correct option: c) Father = 24, Son = 8
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What is the effective discount percentage if a shopkeeper offers a scheme discount 'buy five and get one free'?
A shopkeeper offers the following two discount schemes.
A) Two successive discounts of 12% and 18%
B) Buy 6 get 3 free.
Which schem...
