31.

Average rainfall on Monday, Tuesday, Wednesday and Thursday is 420.5 cm and average on Tuesday, Wednesday, Thursday and Friday is 440.5 cm. If the ratio of rainfall for Monday and Friday is 20: 21, find the rainfall in cm on Monday and Friday.

• 1800, 1890

• 1600, 1680

• 1700, 1470

• 1700, 1470

The average of 5 consecutive integers starting with 'm' is n. What is the average of 6 consecutive integers starting with (m + 2)?

• 

• (n + 2)

• (n + 3)

• (n + 3)

A manufacturer sells an article to a wholesale dealer at a profit of 10%. The wholesale dealer sells it to a shopkeeper at 20% profit. The shopkeeper sells it to a customer for ₹ 56,100 at a loss of 15%. Then the cost price of the article to the manufacturer is

• ₹ 25,000

• ₹ 10,000

• ₹ 50,000

• ₹ 50,000

A loss of 19% gets converted into a profit of 17% when the selling price is increased by ₹ 162. The cost price of the article is

• ₹ 450

• ₹ 600

• ₹ 360

• ₹ 360

A man purchased 150 pens at the rate of ₹ 12 per pen. He sold 50 pens at a gain of 10%. The percentage gain at which he must sell the remaining pens so as to gain 15% on the whole outlay is

• 

• 20%

• 17%

• 17%

A dealer sold two types of goods for ₹ 10,000 each. On one of them, he lost 20% and on the other he gained 20%. His gain or loss per cent in the entire transaction was

• 2% loss

• 2% gain

• 4% gain

• 4% gain

The cost price of 40 articles is the same as the selling price of 25 articles. Find the gain per cent.

• 65%

• 60%

• 15%

• 15%

A sells an article to B making a profit of  of his outlay, B sells it to C, gaining 20%. If C sells it for ₹ 600 and incurs a loss of  of his outlay, the cost price of A is

• ₹ 600

• ₹ 500

• ₹ 720

• ₹ 720

A man had a certain amount with him. He spent 20% of that to buy an article and 5% of the remaining on transport. Then he gifted ₹ 120. If he is left with ₹ 1,400, the amount he spent on transport is

• ₹ 76

• ₹ 61

• ₹ 95

• ₹ 95

The population of a town is 3,11,250. The ratio between women and men is 43 : 40. If there are 24% literate among men and 8% literate among women, the total number of literate persons in the town is

• 41,800

• 48,900

• 56,800

• 56,800