NCERT Exemplar Solutions
Class 6 - Mathematics - Unit 7: AlgebraExpressions into Statements in Ordinary Language
Class 6 - Mathematics - Unit 7: Algebra
Question. 75
A pencil costs Rs p and a pen costs Rs 5p.
Answer:
The cost of pen is 5 times the cost of a pencil.
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Question. 76
Leela contributed Rs y towards the Prime Minister’s Relief Fund. Leela is now left with Rs (y + 10000).
Answer:
Amount left with Leela is Rs 10,000 more than the amount she contributed towards Prime Minister’s Relief fund.
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Question. 77
Kartik is n years old. His father is 7n years old.
Answer:
Age of Kartik’s father is seven times the age of Kartik.
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Question. 78
The maximum temperature on a day in Delhi was p°C. The minimum temperature was (p − 10)°C.
Answer:
The difference between maximum and minimum temperature on a day in Delhi was 10°C.
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Question. 79
John planted t plants last year. His friend Jay planted 2t + 10 plants that year.
Answer:
Last year Jay planted 10 more plants than twice the number of plants planted by John.
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Question. 80
Sharad used to take p cups tea a day. After having some health problem, he takes p − 5 cups of tea a day.
Answer:
Sharad reduced the consumption of tea per day by 5 cups after having some health problem.
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Question. 81
The number of students dropping out of school last year was m. Number of students dropping out of school this year is m − 30.
Answer:
The number of students dropping out this year is 30 less than the number of students dropped last year.
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Question. 82
Price of petrol was Rs p per litre last month. Price of petrol now is Rs (p − 5) per litre.
Answer:
The price of petrol per litre decreased this month by Rs 5 than its price last month.
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Question. 83
Khader’s monthly salary was Rs P in the year 2005. His salary in 2006 was Rs (P + 1000).
Answer:
Khader’s monthly salary increased by Rs 1000 in the year 2006 than in 2005.
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Question. 84
The number of girls enrolled in a school last year was g. The number of girls enrolled this year in the school is 3g − 10.
Answer:
The number of girls enrolled this year was 10 less than 3 times the girls enrolled last year.