Allie is counting the number of 1 kg weights and 2 kg weights at the fitness center. a represents the number of 1 kg weights and b represents the number of 2 kg weights.

Which expression describes the total weight of all 1 kg and 2 kg weights?

A.
a + 2b

B.
2a + b

C.
2(a + b)

D.
2b

Question

Allie is counting the number of 1 kg weights and 2 kg weights at the fitness center. a represents the number of 1 kg weights and b represents the number of 2 kg weights.

Which expression describes the total weight of all 1 kg and 2 kg weights?
 
 A.
a + 2b  
 
 B.
2a + b
 
 C.
2(a + b)
 
 D.
2b

anonymous · Answer

well 1kg is 1/2 of 2 kg
so you have to have 2a and 1b
there is only one thing with those B

anonymous · Answer

that wasnt the correct answer

anonymous · Answer

It is A because b=2kg and a=1kg so if you put it together the b would be how many weights there are of the 2kg and you would have to multiply it by 2 so then you can get the total weight and then you would just need to add the total number of 1kg weights