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4 Mark Question

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Question 14 Marks
A car is travelling from city P to city Q, which are 350km apart. The line graph given below describes the distances of the car from the city P at different times.
Study the above graph and answer the questions given below:
  1. What information is given on the two axes?
  2. From where and when did the car begin its journey?
  3. How far dis the car go in the first hour?
  4. How far did the car go during (a) the 2nd hour and (b) the 3rd hour?
  5. Was the speed same during first three hours? How do you know it?
  6. Did the car stop for some during at any place? Justify your answer.
  7. When did the car reach city Q?
Answer

  1. Both boys and girls achieve their maximum height in 18th years.
  2. Boys grows faster than girls in puberty.
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Question 24 Marks
For an experiment in botany, two different plants, plant A and plant B, were grown under similar laboratory conditions. Their heights were measured at the end of each week for three weeks. The results are shown by the line graph given below:
Study the above graph carefully and answer the questions given below:
  1. How high was plant A after,
  1. 2 weeks.
  2. 3 weeks.
  1. How high was plant B after,
  1. 2 weeks.
  2. 3 weeks.
  1. How much did plant A grow during the $3^{\text {rd }}$ week?
  2. How much did plant B grow from the end of the $2^{\text {nd }}$ week to the end of the $3^{\text {rd }}$ week?
  3. During which week did plant A grow most?
  4. During which week did plant B grow least?
  5. Were the two plants of the same height during any week shown here? Specify.
Answer
  1. Plant A was
  1. 7cm high after 2 weeks.
  2. 9cm high after 3 weeks.
  1. Plant B was
  1. 7cm high after 2 weeks.
  2. 10cm high after 3 weeks.
  1. Plant A grow 2 cm during the $3^{\text {rd }}$ week.
  2. Plant B grow 3 cm in the given period.
  3. Plant A grow most in $2^{\text {nd }}$ week.
  4. Plant B grow least in $1^{\text {st }}$ week.
  5. At the end of the $2^{\text {nd }}$ week both plants were of same height can be seen in the graph.
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