Question 1 :
If the distance travelled by a rickshaw in one hour is 10 km, then the distance travelled by the same rickshaw with the same speed in one minute is

Question 2 :
Two quantities x and y are said to be in _____ proportion if an increase in x causes a proportional decrease in y and vice-versa, in such a manner that the product of their corresponding values remains constant.

Question 3 :
The area of cultivated land and the crop harvested is a case of direct proportion. True or false ?

Question 4 :
The perimeter of a circle and its diameter vary _______ with each other.

Question 5 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cc8cf59b460d7261ed99.PNG' /> Look at the above figure. If x varies inversely as y, then what replaces the blank ?

Question 6 :
A packet of sweets was distributed among 10 children and each of them received 4 sweets. If it is distributed among 8 children, how many sweets will each child get?

Question 7 :
If xy = 10, then x and y vary ______ with each other.

Question 8 :
If x varies inversely as y and x = 20 when y = 600, find y when x = 400.

Question 9 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cc93f59b460d7261eda2.PNG' /> In the above figure, a table is shown. If a and b vary inversely to each other, then find the value of x.

Question 10 :
When the speed is kept fixed, time and distance vary inversely with each other. True or false ?

Question 11 :
Choose the correct option. The time taken by a train to cover a fixed distance and the speed of the train _______.

Question 12 :
Length of a side of a square and its area vary directly with each other. True or false ?

Question 13 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cc95f59b460d7261eda5.PNG' /> In the above figure, a table is shown. If a and b vary inversely to each other, then find the value of l.

Question 14 :
If 25 metres of cloth costs Rs 337.50, then what will be the cost of 40 metres of the same type of cloth?

Question 15 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cca1f59b460d7261edb4.PNG' /> In the above figure, a key board of a harmonium is given. What is the ratio of black keys to all keys on the given keyboard ?

Question 16 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cc96f59b460d7261eda7.PNG' /> In the above figure, a table is shown. If a and b vary inversely to each other, then find the value of n.

Question 17 :
In case of direct proportion, if $y_1,y_2$ are the values of y corresponding to the values $x_1,x_2$ of x respectively, then -

Question 18 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cc9af59b460d7261edab.PNG' /> Refer to the above figure. A water tank casts a shadow 21 m long. A tree of height 9.5 m casts a shadow 8 m long at the same time. The lengths of the shadows are directly proprotional to their heights. Find the height of the tank.

Question 19 :
If x varies inversely as y and y = 60 when x = 1.5. Find x, when y = 4.5.