Fill in the blanks.

Helen buys 2 packets of peanuts for Rs15. What is the cost of 10 packets of peanuts?Rs
A lorry can carry 22 sacks of potatoes to the market in 3 trips. How many sacks of potatoes will the lorry carry in 12 trips? sacks of potatoes
Siven bought 7 story books and paid Rs840. Each story book was sold for the same price. How much would he have paid if he had bought only 5 story books?Rs
15 minutes talk time on a mobile phone costs Rs25. How much will I pay if I talk for 1 hour?Rs
Thirty pupils paid a total bus fare of Rs1290 for an outing. The fare was the same for everyone. What was the bus fare paid by ten pupils?Rs
Three phone prepaid cards cost Rs150. How many prepaid cards can be bought with Rs600? cards
Twelve metres of cloth cost Rs900. Find the cost of twenty five metres of cloth.Rs
An adult ticket for a fancy-fair costs Rs50. A child tacket costs half as much as an adult ticket. How much will 3 adults and 3 children pay?Rs