Question

Mrs Katie constructs a cube with 512 magnetic block students and her two classes will each make an identical cube. There are 28 students in one class and 25 students in the other class. How many blocks dies she need got all her students?

Answer 1

I take it each student is going to make a block. 
She has 25 + 28 students all together which is 53 students total
Each one requires 512 magnetic blocks

Therefore she needs 53 * 512 = 27136 blocks.