Quiz Discussion

An ore contains 25% of an alloy that has 90% iron. Other than this, in the remaining 75% of the ore, there is no iron. How many kilograms of the ore are needed to obtain 60 kg of pure iron?

• 1] 250 kg
• 2] 275 kg
• 3] 300 kg
• 4] 266.66 kg

The price of raw materials has gone up by 15%, labor cost has also increased from 25% of the cost of raw material to 30% of the cost of raw material. By how much percentage should there be reduction in the usage of raw materials so as to keep the cost same?

• 1] 28%
• 2] 17%
• 3] 27%
• 4] 24%
• 5] Cannot determined

From 2000 onwards, till 2003 the price of computers increased every year by 10%. After that due to government subsidy the price of computers decreases every year by 10%. The price of a computer in 2006 will be approx. how much per cent less than the price in 2000 if the same pattern of price is continued :

• 1] 2
• 2] 3
• 3] 4
• 4] 5

The rate of increase of the price of sugar is observed to be two percent more than the inflation rate expressed in percentage. The price of sugar, on January 1, 1994 is Rs. 20 per kg. The inflation rates of the years 1994 and 1995 are expected to be 8% each. The expected price of sugar on January 1, 1996 would be

• 1] Rs. 23.60
• 2] Rs. 24
• 3] Rs. 24.20
• 4] Rs. 24.60
• 5] None of these

Each side of a rectangular field diminished by 40%. By how much per cent is the area of the field diminished?

• 1] 32%
• 2] 64%
• 3] 25%
• 4] 16%

A man spends 35% of his income on food, 25% on children's education and 80% of the remaining on house rent. What percent of his income he is left with ? 

• 1]

  8%

• 2]

  10%

• 3]

  12%

• 4]

  14%

Narayan spends 30% of his income on education and 50% of the remaining on food. He gives Rs. 1000 as monthly rent and now has Rs. 1800 left with him. What is his monthly income?

• 1] Rs. 8000
• 2] Rs. 7000
• 3] Rs. 9000
• 4] Rs. 6000

Population of a town increase 2.5% annually but is decreased by 0.5% every year due to migration. What will be the percentage increase in 2 years?

• 1] 5%
• 2] 4.04%
• 3] 4%
• 4] 3.96%

A customer asks for the production of x number of goods. The company produces y number of goods daily. Out of which z% are units for sale. The order will be completed in :

• 1]

    days

• 2]

  days

• 3]

  days

• 4]

  days

• 5]

  Cannot determined

In an examination 80% candidates passed in English and 85% candidates passed in Mathematics. If 73% candidates passed in both these subjects, then what per cent of candidates failed in both the subjects?

• 1] 8
• 2] 15
• 3] 27
• 4] 35