engineering recuitment HPCL Engineer Mock Test 2024 Quantitative Aptitude Average

If the average of five observations x, x + 3, x + 5, x + 8 and x + 14 is 21, then what is the average of first three observations?

1
\(17\frac{1}{3}\)
2
\(17\frac{2}{3}\)
3
\(18\frac{2}{3}\)
4
\(18\frac{1}{3}\)
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