Three tennis balls have the same mass. If the total mass of the 3 balls is 6 3/10 grams, what is the of 1 ball?
A 18 9/10 grams
B 2 3/10 grams
C 2 1/10 grams
D 10/189 grams
To find the mass of 1 tennis ball, we divide the total mass of the 3 balls by 3:
6 3/10 grams ÷ 3 = 20/10 grams ÷ 3 = (20 ÷ 10) ÷ 3 = 2 grams
Therefore, the mass of 1 tennis ball is 2 grams.
The correct answer is B) 2 3/10 grams.
To find the mass of one tennis ball, divide the total mass of the 3 balls by 3.
Total mass of the 3 balls = 6 3/10 grams
Dividing by 3 gives us:
(6 3/10) grams ÷ 3 = (63/10) grams ÷ 3 = (63/10) grams × (1/3) = (63/30) grams = 2 1/10 grams
Therefore, the mass of one tennis ball is 2 1/10 grams. So the answer is C) 2 1/10 grams.
To find the mass of one ball, you need to divide the total mass of the 3 balls by the number of balls. In this case, since there are 3 balls and the total mass is given as 6 3/10 grams, you need to perform the division.
Let's start by converting the total mass into a common fraction. 6 3/10 can be written as an improper fraction as (6 * 10 + 3) / 10 = 63/10 grams.
Now, divide the total mass by the number of balls: 63/10 grams ÷ 3 balls.
To divide a fraction by a whole number, you need to multiply the numerator of the fraction by the reciprocal of the whole number.
Reciprocal of 3 is 1/3.
So, (63/10 grams) × (1/3) = (63/10) × (1/3) = 63/30 grams.
Now, simplify the fraction. Divide both the numerator and denominator by their greatest common divisor, which is 3.
63/30 can be simplified to 21/10.
Therefore, the mass of one ball is 21/10 grams.
In mixed number form, this can be written as 2 1/10 grams.
So, the answer is C) 2 1/10 grams.