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?
A 1 7/15
B 8/15
C 6/8
D 3/4
To find the fraction of teenagers who mainly exercise by walking, we need to multiply the fraction of teenagers who said they got regular exercise (2/3) by the fraction of those who said walking was their main form of exercise (4/5).
Fraction who mainly exercise by walking = (2/3) * (4/5)
= 8/15
Therefore, the fraction of teenagers who mainly exercise by walking is 8/15.
The answer is B.
To find the fraction of teenagers who mainly exercise by walking, we need to multiply the fractions: 2/3 * 4/5.
To do this, we multiply the numerators together (2 * 4 = 8) and the denominators together (3 * 5 = 15). This gives us 8/15.
Therefore, the fraction of teenagers who mainly exercise by walking is 8/15.
So, the answer is option B: 8/15.
To find the fraction of teenagers who mainly exercise by walking, we need to multiply the fractions representing the proportion of teenagers who exercise regularly and the proportion of those who mainly walk.
First, let's find the fraction of teenagers who exercise regularly. The survey states that 2/3 of the teenagers responded that they exercise regularly.
Next, let's find the fraction of those who mainly walk. According to the survey, 4/5 of those who exercise regularly stated that walking was their main form of exercise.
To find the fraction of teenagers who mainly exercise by walking, we multiply these two fractions:
2/3 * 4/5 = 8/15
Therefore, the fraction of teenagers who mainly exercise by walking is 8/15.
The answer is B) 8/15.