Explanation

8 men can do work = 20 days 

1 man can do this work = 8*20

10 men can do that work = [8*20]/10

                                              =16 days 

Explanation

Total people = 100

Pepsi drinkers = 50

Coke drinkers = 40

Both = 20

People drinking Pepsi or Coke = Pepsi + Coke - Both

= 50 + 40 - 20

= 70

People drinking neither = Total - People drinking Pepsi or Coke

= 100 - 70

= 30

Explanation

1 houre = 3600sec

                 =1/100 * 3600

                   =36 km.

SH31-8-2023

Explanation

Time Start : 4:15 a.m.

Time added (reached time) 5hrs + 20 mints

4:15 a.m.

5:20 mints

---------

9:35am

Explanation

A farmer has 15 cows, and each cow produces an average of 20 liters of milk per day 2100 liters of milk does the farmer get in a week 

15*20=300liter in one day

In 7 days 300*7=2100

Explanation

600 x 50 = 30000

Explanation

Explanation

2(l+b) =110

(L+b) = 55

B=L-3

Therefore L+L-3=55

2L=58

L=29 feet

Thus Length is 29 feet 

Explanation

12 men took to 6 hours to complete the work.

It means there is 12 x 6= 72 units of work

Now 12men done work for one hour. So 12 x 1 =12 units of work completed.

Remaining work = 72-12= 60 units

Now the no of men=12+8= 20

So 60 units of work have to complete by 20 men

Therefore 60/20= 3 hours

Explanation

A is twice as good as B, so A's work rate is 2 times that of B.

Since A takes 30 days less than B, let's assume B takes x days to complete the work. Then, A takes x - 30 days to complete the same work.

Since A is twice as good, A's work rate is 2 times that of B, so A completes the work in half the time it takes B. Therefore, x - 30 = (1/2)x

Solving the equation, we get x = 60 days for B and x - 30 = 30 days for A.

Since A and B are working together, their combined work rate is the sum of their individual work rates. So, the total work is completed in (60 * 30) / (60 + 30) = 1800 / 90 = 20 days.

Therefore, the correct answer is: 20 days