Answer: 885.5 km

Explanation:
Let the Actual distance be x km. Then
More distance on the map, More is the actual distance (Direct proportion)
Hence, 0.6 : 80.5 :: 6.6 : x ó 0.6x = 80.5 * 6.6 => x = (80.5 * 6.6)/ 0.6 = 885.5

Answer: 6

Explanation:
Work Done = 5/8, Balance work = (1 – 5/8) = 3/8
Less work, less days (direct proportion)
Let the required number of days be x
Then, 5/8 : 3/8 :: 10 : x <=> 5/8 * x = 3/8 * 10 <=> x = (3/8 * 10 * 8/5) = 6

Answer: Rs. 220

Explanation:
Let the required price be Rs. x. Then, Less toys, Less cost (Direct Proportion)
6 : 5 :: 264.37 : x
6x = (5 x 264.37)

x = (5 x 264.37)
             6

x = 220.308

Approximate price of 5 toys = Rs. 220.

Answer: 24

Explanation:
Let the required number of days be x
Then, less men, more days (indirect proportion)
Hence, 27 : 36 :: 18 : x
=> 27 * x = 36 * 18
=> x = 24

Answer: 12

Explanation:
More number of days means – more length, more depth and more width. Hence, it’s a direct proportion.
(100*25*30):(75*20*50)::12:x
75000:75000::12:x
x = 12

Answer: 195

Explanation:
Le the required time be x seconds.
More metres, More time (Direct Proportion)

=>  0.128 : 25 :: 1 : x
=>  128x = 25 x 1

x =   25      =  25 x 1000
     0.128        128

x = 195.31.
Required time = 195 sec (approximately).

Answer: 30

Explanation:

Answer: 1800

Explanation:

Answer: 36

Explanation:
54 men work 10 hours a day for 30 days and 5/9th of the work is completed.
Now, let x workers be employed to work 8 hours a day for the rest 18 days to complete 4/9th of the work.
M1D1T1W2 = M2D2T2W1
54*30*10*4/9 = x*18*8*5/9
x = 90
Hence, 36 more workers should be employed.

Answer: 17.5 m

Explanation:
Let the height of the building be x metres.
Less lengthy shadow, less is the height (Direct proportion)

Hence, 40.25 : 28.75 :: 17.5 : x
           40.25 * x = 28.75 * 17.5

           x = (28.75 * 17.5)/ 40.25
           x = 12.5