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\ 06-Jan-2025 Surendra Prajapati Proof-7 Reader’s Sign _______________________ Date __________

Direct and Indirect
12 Variations

Learning Objectives

After going through this chapter, the students will be able to… Scan to learn
 understand and explain the concept of variation
 differentiate between direct and inverse variations
 apply the concept of variations (proportions) to real-life problems
 apply the concept of direct and inverse variations in time, work, speed, distance, pipe and cisterns based
problems

get ready!

Shivam went with his mother to a studio to place an order for some photographs.

Hi, we need some good
photos. He has to submit Sure! Which size do
it to his school. you need? The price of
passport size photos of
8 copies is `60 and for
postcard size photos of
2 copies is `150.

No mom, my
school teacher
told me to
submit 3 copies Okay! Stamp-sized
of stamp size photo will be 20
photos. What is copies for `60.
its rate?

Photographs and their dimensions are as follows:
Passport-sized photo: 3.5 cm × 4.5 cm, Stamp-sized photo: 2.0 cm × 2.5 cm, Postcard-sized photo: 10 cm × 15 cm

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