Averages Questions

The given bar graph shows the total number of different types of electronic devices P, Q, R, S, T (in lakh) imported by the government of India in 2017 and 2018. Study the graph carefully and answer the following question.The average import of P and R types of electronic devices in 2018 was equal to the import of which type in 2017?

Rahul's average score across three exams is $82$. In his fourth exam, he scores $94$. What is Rahul's new average score across all four exams?

The average of 12 numbers is 47. The average of the first 5 numbers is 45 and the average of the next 4 numbers is 52. If the 10
th
number is 10 less than the 11
th
number and is 5 more than the 12
th
number, then what is the average value of the 11
th
and 12
th
numbers?