Test Details

Direct Proportion and Inverse Proportion

Jan 22, 7:00 PM

90 minutes

Jan 22, 10:00 PM

42.0 marks

MCQ

23 questions

vinayak sir

Hi good morning students सर्व विद्यार्थी सकाळी आठ ते अकरा या वेळेत येथे उपस्थित राहतील काही अडचणी असल्यास आपण विचारू शकता सर्व विषयाचे तास सुरू आहेत

Class Details

Mathematics

Class 8th Scolership Exam

Mathematics

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Question Text

Question 1 :
If $x$ & $y$ are in inverse proportion then find proportionality constant at $x=3,\;y=2$

Question 2 :
The number of workers increased the days to complete the work decreased."is example of

Question 3 :
A car takes 2 hours to reach a destination by travelling at the speed of 60 km/h. when the car travels at the speed of 80 km/h it takes

Question 4 :
On a scale of map, $0.6$ cm represents $ 6.6$km. If the distance between the points on the map is $80.5$ cm, the actual<span>distance between these points is</span>

Question 5 :
If $4$ men or $6$ women earn Rs $360$ in one day, then how much does a man earn in one day?

Question 6 :
Observe the values and find the quantities which are in direct proportion<br/>$ \begin{equation}x : \;\;[4\;\;6\;\;8\;\;10] \\ y : \;\;[2\;\;3\;\;4\;\;\;5] \\ z : \;\;[1\;\;2\;\;3\;\;\;4]\end{equation}$

Question 9 :
A man eats $200\:g$ of rice a day and he has enough rice to last him for $35$ days. How long would the stock of rice last him if he were to eat $250\:g$ rice a day.

Question 10 :
A car travels $40\ kms$ in $30$ mins. If the speed of bus remains same, how far can it travel in $3$ hrs?

Question 11 :
<table class="table table-bordered"><tbody><tr><td>$ x$</td><td> $2$</td><td>$ 5$</td><td>$ 25$</td></tr><tr><td>$ y$</td><td> $25$</td><td> $10$</td><td> $m$</td></tr></tbody></table>If $x$ & $y$ are in inverse proportion, find m<br/><br/>

Question 12 :
If x & y are in direct proportion then find the value of a<br>$\begin{equation}x\;\;2\;\;3\;\;5\;\;\;7 \\ y\;\;4\;\;6\;\;a\;\;14\end{equation}$

Question 13 :
Cost of 10 mangoes is Rs. 100 The cost of 18 mangoes is__

Question 14 :
$A, B$ and $C$ can finish a job working alone in $72, 24$ and $36$ days respectively. In how many days they can finish the job if they worked together?

Question 15 :
If $\displaystyle \frac { a }{ b } -\frac { c }{ d } =0$ and bc=7, then determine the true statement among the following.

Question 16 :
If y is directly proportional to x & when $x=2$ & $y=4$, what is constant of proportionality?

Question 17 :
14 apples cost Rs. 140 The cost of 1 apple is__

Question 18 :
Mark the correct alternative of the following.<br>If six men can do a piece of work in $6$ days, then $3$ men can do same work in?<br>

Question 19 :
The cost of $3$ digital cameras and $5$ cell phones is Rs. $35,290$. What is the cost of $9$ digital cameras and $15$ cell phones?

Question 20 :
The cost of $2$ meter cloth is $10$. Find the cost of $100\ m$ cloth.

Question 21 :
<div><span>If $20: 28= x:7=10:y$.</span><br/></div>The values of $x$ and $y$ in the box respectively are __________.<br/>

Question 22 :
A fort is provisioned for $42$ days. After $10$ days, a reinforcement of $200$ men arrives and the food will now last only $24$ days. How many men were there in the fort?

Question 23 :
Share of A, B and C respectively, are ____________, if Rs. $5460$ is divided in $\displaystyle\frac{1}{2}:\frac{1}{3}:\frac{1}{4}$.

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