Multiply 4/5 by 7 1/3 . Convert the product to be a mixed number.(1 point)
To multiply 4/5 by 7 1/3, we need to convert the mixed number to an improper fraction first.
7 1/3 = 7 + 1/3 = 21/3 + 1/3 = 22/3
Now, let's multiply 4/5 by 22/3:
(4/5) * (22/3) = (4 * 22) / (5 * 3) = 88/15
Next, let's convert the improper fraction 88/15 to a mixed number:
88 รท 15 = 5 with a remainder of 13
So, the mixed number is 5 13/15.
In a survey of teenagers, 2/3 responded that they got regular exercise, and 4/5 of those said that walking was their main form of exercise. What fraction of the teenagers mainly exercise by walking?(1 point)
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To find the fraction of teenagers who mainly exercise by walking, we first need to find the fraction of teenagers who got regular exercise and then find the fraction of those who said walking was their main form of exercise.
Given:
Fraction of teenagers who got regular exercise = 2/3
Fraction of those who got regular exercise and said walking was their main form of exercise = 4/5
The fraction of teenagers who mainly exercise by walking can be calculated by multiplying the two fractions:
(2/3) * (4/5) = (2 * 4) / (3 * 5) = 8 / 15
Therefore, 8/15 of the teenagers mainly exercise by walking.