Question

21 binders can bind 1400books in 20 days. how many binders will be required to bind 880 books in 22 days
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Answer 1

Answer:

9 blinders

Step-by-step explanation:

Let the required number of binders be= x

Less books, Less binders (Direct proportion)

More days, Less binders (Indirect proportion)

Books 1400:800

Days 20:18 }::21:x

∴ 1400×20×x=800×15×21  

⇔x=

(800×15×21)

(1400×20)

 

x=9 blinders

Marks as Brain list