John is selling fruits.
He sells grapes at $30, Dates $25, and a Wolfberry $45.
At what price does he sell fig?

PS: Logical Thinking

You walk into a room where there are three primates held in their respective cages:
1) A lion who is eating the flesh of a goat.
2) An orangutan who is playing with blocks.
3) A donkey who is sitting idle.

Who is the most intelligent primate in the room?

What do you see in the given picture?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Why is Saturday stronger than Monday?

A sundial has the fewest moving parts of any timepiece. Which has the most?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

A man was driving a black truck. His lights were not on. The moon was not out. A lady was crossing the street. How did the man see her?

A research team went to a village somewhere between the jungles of Africa. Luckily for them, they reached the day when quite an interesting custom was to be performed. The custom was performed once a year as they confirmed and was performed in order to collect the taxes from every male of the region.

The taxes were to be paid in the form of grains. Everyone must pay pounds of grain equaling his respective age. This means a 20-year-old will have to pay 20 pounds of grain and a 30-year-old will pay 30 pounds of grain and so on.

The chief who collects the tax has 7 weights and a large 2-pan scale to weigh. But there is another custom that the chief can weigh only three of the seven weights.

Can you find out the weights of the seven weights? Also, what is the maximum age of the man that can be weighed for the payment of taxes?