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To find the average score of the entire class, Calculate the total score of the first group (12 students with an average score of 80) = 12×80 = 960 Calculate the total score of the second group (18 students with an average score of 75) = 18×75 = 1350 Add the total scores of both groups = 960+1350 = 2310 Divide the total score by the total number of students (30) = 2310/30 = 77
There is a long list of terror attacks in who the security establishment failed to carry out a scientific probe.
With no particular apprehension for his neighbouring future, he fell asleep.
That car alarm is getting on my nerves.
The company announced that it will be launching a new series of eco-friendly products, which aimed to reduce plastic waste by 50%.