Questions 28, 29 and 30 are based on the following description.
There are three machines in a factory which make fertilizer upon orders. Each machine is capable of making any type of fertilizer, but no machine must be used to produce two or more types during one day. Capacity of each machine i.e. the amount of each type of fertilizer X, Y that each machine can produce in one hour is given below in Tonnes.

How long will it take to finish an order of 100 Tonnes of type X and 150 Tonnes of type Y, if only type X was made on machine B ?

Questions 25 and 26 are based on the following description.
Amabagamuwa and Dambagamuwa are two suburbs separated by a river. The road connecting these two suburbs is 4 km long and it has a bridge in the middle. Speed limits are specified as 20 km h^-1 on the bridge and 60 km h^-1 on the road except on the bridge.
What is the minimum time required to go from Ambagamuwa to Dambagamuwa, if a vehicle needs to go the entire journey in uniform speed?

• For questions 21 and 22, refer the following graphs which show the number of infected and recovered persons in each day from some non-fatal viral fever in a selected region during six consecutive days.

On which day a maximum number of persons got infected with the viral fever?

For questions 23 and 24, consider the following conversation that took place at the doorstep of a lift which
was about to go up.
Person 1: At least two more persons can ride this lift.
Person 2: Actually, it can hold more than five.
Person 3: That’s crazy. This is already overcrowded. I might have to get off to let it move up.
Person 4: Well, there are just four of us inside the lift.

If only three persons speak truth in the above conversation, how many persons could possibly be the capacity of the lift?