Devon has 14 steel balls of equal weight. If he puts 8 of them in one pan of a balance, and the rest along with a weight of 20 g
2 answers:
Answer:
D)
Step-by-step explanation:
For the pans to balance each other they must have both equal weight on them, this can be described in an equation like this:
Weight on side A=Weight on side B
It is described for us the weight on each side:
-The weight on side A will be the weight of 1 ball eight times( because we have 8 balls of the same weight). Lets say the weight of one ball is so it will be like this:
Weight on side A
-The weight on side B will be the weight of 1 ball 6 times (becasue we have 6 balls of the same weight) plus 20 grams that we added to balance the pans and make them equal so it will be like this:
Weight on side B
Now replacing on the first eqation we would have:
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