Kevin placed 10 cubes on the right side of a pan balance. He placed 4 cubes on the left side. Then he doubled the number of cubes on the right side. Find the number of cubes that he must add to the left side to balance the pans.
A. 14
B. 6
C. 16
D. 24
so there would be 20 cubes on the right and there are 4 on the left so add 16 and it will be 20 on each side
So is the answer 16?
yes my man. the answer is c. 16
To solve this problem, we need to understand the situation and apply some basic math concepts.
According to the given information, Kevin initially placed 10 cubes on the right side and 4 cubes on the left side of the pan balance. Then, he doubled the number of cubes on the right side.
Initially:
Right side = 10 cubes
Left side = 4 cubes
After doubling the number of cubes on the right side:
Right side = 2 * 10 = 20 cubes
Left side = 4 cubes
Now, we need to find the number of cubes that Kevin must add to the left side to balance the pans.
To balance the pans, we need the weights on both sides to be equal. The weight of each cube is the same on both sides. So, the number of cubes on both sides determines the balance.
Initially, there were 10 cubes on the right side and 4 cubes on the left side. This means that the right side was heavier, as there were more cubes on that side.
To balance the pans, we need to add an equal number of cubes to the left side. Kevin doubled the number of cubes on the right side, so the right side now has 20 cubes.
To make the pans balance, we need to make the left side also have 20 cubes. Therefore, we need to add (20 - 4) = 16 more cubes to the left side.
Hence, the answer is C. 16 cubes that Kevin must add to the left side to balance the pans.