Wipro Company Numerical Ability Averages

The average of 10 numbers is 7.4, while the average of the other 8 numbers in my set is 6.5. What’s the average of the entire set, rounded to one decimal?
a)6.8
b)6.9
c)7.0
d)7.1
e)7.2

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Wipro Other Question

Find the sum of the prime numbers between 35 and 45.
a)80
b)121
c)119
d)137
e)160 Runner A is twice as fast as Runner B. If runner B takes 10 minutes to run 5 km, how long will it take runner A to run 15 km (in minutes)?
a)3.333
b)10
c)15
d)30