Answer:
5/16
Step-by-step explanation:
When multiplying fractions, you multiply the numerator by the numerator & the denominator by the denominator.
So 5/8 x 1/2 = 5 x 1/8 x 2 = 5/16
<u>Bus:</u>
40 min = 36 miles
1 min = 36 ÷ 40 = 0.9 mile
<u>Car:</u>
1 min = 0.9 x 1.4 = 1.26 miles
<u>Total distance covered by both vehicles in 1 min: </u>
1.26 + 0.9 = 2.16 miles
<u>Time needed for both of them to cover 36km:</u>
36 ÷ 2.16 = 16 2/3 min
Answer: They will meet 16 2/3 mins after they have started.
Answer:
d. 20
Step-by-step explanation:
The given question implies 5 permutation 2, i.e 
.
But,
= 
So that for , n = 5 and r = 2.
= 
= 
= 
Cancel out 3 and 2 with respect to the numerator and denominator.
= 5 * 4
= 20
Therefore,
= 20
So that the correct option is D.
Answer: Second group
Step-by-step explanation:
The first group the mean is 13
the second group the mean is 20
So its the second one !
