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Of four numbers whose average is 60, the first is one-fourth of the sum of the sum of the last three. The first number is

(a)    15                              (b)    42                                (c)    45                        (d)    48


Question ID - 50625 | SaraNextGen Top Answer

Of four numbers whose average is 60, the first is one-fourth of the sum of the sum of the last three. The first number is

(a)    15                              (b)    42                                (c)    45                        (d)    48

1 Answer
127 votes
Answer Key / Explanation : (d) -

Let the four numbers be  and  respectively.

Then,

Also,

Hence, the first number is 48.

127 votes

127
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