A worker is paid Rs. 200 for 8 days of work. If he works for 20 days, how much will he get?

If a and b vary inversely, fill in the blanks:

Reema types 540 words during half an hour. How many words should she type in 6 minutes?

Sushma can read a book containing 480 pages in 20 days. How many pages will she read in 6 days?

5 bags of rice weigh 150 kg. How many such bags of rice will weigh 900 kg?

If two quantities x and y vary inversely with each other, then _______________________

150 metric tons of luggage can be loaded in 20 trucks. Find how much luggage can be loaded in 18 trucks of same size? 

6 men can complete an assignment in 10 days. In how many days the same assignment will be completed by 20 men?

Reena types 750 words in 5 minutes. How much time will she take to type 3,150 words?

Amar takes 15 days to reduce 20 kilograms of his weight by doing 20 minutes of exercise per day. If he does exercise for 1 hour per day, how many days will he take to reduce the same weight?