The given table shows the weights of some marbles. What is the weight of marble P?
  
 	
(a)	30 g	
(b)	40 g	
(c)	20 g	
(d)	10 g
Answer is 40
The given table shows the weights of some marbles. What is the weight of marble P?
  
 	
(a)	30 g	
(b)	40 g	
(c)	20 g	
(d)	10 g