Class A has 13 pupils and class B has 30 pupils. Both classes sit the same maths test.
The mean score for class A is 45.
The mean score for both classes is 66.
What is the mean score (rounded to 1 DP) in the maths test for class B?
quickest answer gets brainliest :))

Find the average speed of a rabbit that runs a distance of 22 m in a time of 1.8 s .

You have a 32-foot fence around a square garden. there are 4 equal sections. you paint 13 of one section of the fence. what fraction of the fence did you paint? you have a 32-foot fence around a square garden. there are 4 equal sections. you paint 13 of one section of the fence. what fraction of the fence did you paint?

Hi, can anyone show me how to do this problem? 100 points for this. in advance