Question

• In year 1976, out of 100 how many houses used uple and wood?

• Which was the fuel used the least in 1976?

• In 1976, LPG and kerosene were used in ______ houses and in 1996 this increased to______. This means that in twenty years their use increased by________%.

• Out of 100 how many houses were using electricity in 1996?

• Which fuel was used the least in 1996? What percentage of houses used it in the year 1976?

Answer 1

• In year 1976, out of 100, 84 houses used uple and wood.

• Electricity as a fuel was used the least in 1976.

• In 1976, LPG and kerosene were used in 10 houses and in 1996 this increased to 18 . This means that in twenty years their use increased by 80 %.

  Hint: Increase in LPG and kerosene usage in twenty years = (18 – 10/ 10) × 100

• Out of 100, 5 houses were using electricity in 1996.

• Coal was used the least in 1996. 5% of houses used it in the year 1976.

  Hint: Percentage of houses using coal in 1976 = 5/ 100 × 100