MEDIUM
8th CBSE
IMPORTANT
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If x and y are in direct proportion, then (x-1) and (y-1) are also in direct proportion.
 

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Important Questions on Direct and Inverse Proportions

EASY
8th CBSE
IMPORTANT
NCERT Practice Workbook Mathematics>Chapter 13 - Direct and Inverse Proportions>Worksheet 1>Q 4
When the distance is kept fixed, then speed and time vary directly with each other.
EASY
8th CBSE
IMPORTANT
NCERT Practice Workbook Mathematics>Chapter 13 - Direct and Inverse Proportions>Worksheet 1>Q 4
When two quantities are related in such a manner that if one increases and the other also decreases, then they always vary directly.
 
EASY
8th CBSE
IMPORTANT
NCERT Practice Workbook Mathematics>Chapter 13 - Direct and Inverse Proportions>Worksheet 1>Q 4
The area of a field and the crop harvested are in direct proportion.
EASY
8th CBSE
IMPORTANT
NCERT Practice Workbook Mathematics>Chapter 13 - Direct and Inverse Proportions>Worksheet 1>Q 4
Devangi travels 50 m distance in 75 steps. The distance travelled in 375 steps is 0.350 km.
EASY
8th CBSE
IMPORTANT
NCERT Practice Workbook Mathematics>Chapter 13 - Direct and Inverse Proportions>Worksheet 1>Q 5
A machine takes 6 h in filling 48 containers. If the k number of containers filled by it in 48 h, then find the value k.
EASY
8th CBSE
IMPORTANT
NCERT Practice Workbook Mathematics>Chapter 13 - Direct and Inverse Proportions>Worksheet 1>Q 5
The cost of 8 m cloth is ₹250. If the cost of 5.8 m of the same cloth is ₹k, then find the value of k.
EASY
8th CBSE
IMPORTANT
NCERT Practice Workbook Mathematics>Chapter 13 - Direct and Inverse Proportions>Worksheet 1>Q 5
A person can type 1920 words in 60 min. If he is taking k min to type 3008 words, then find the value of k.
MEDIUM
8th CBSE
IMPORTANT
NCERT Practice Workbook Mathematics>Chapter 13 - Direct and Inverse Proportions>Worksheet 1>Q 5
In a city map a scale of 1 cm represents 6 km. If the distance of a zoo from a metro station is 4.5 cm and the actual distance is k km then find the value of k.