Of the 5 numbers, whose average is 75, the first is one-fourth of the sum of the last 4. The first number is?
Choose the correct choice from the following options:
A) 75  B) 80  C) 78  D) 56  E) 67
Total of 5 numbers = 5 * 75= 
<gadget id="calculator">5 * 75</gadget>
<output>375</output>
375   Let total of last 4 numbers= x   1st number = x/4   x+ x/4 = 375   5x = 1500 =&gt; x =300   1st number = 300/ 4= 
<gadget id="calculator">300/ 4</gadget>
<output>75</output>
75   75nswer :75
<result>A</result>
Of the 5 numbers, whose average is 75, the first is one-fourth of the sum of the last 4. The first number is?