Maths 21 binders can make a binding of 1400 books in 15 days, how many binders are needed to make a booklet of 800 books in 20 days?
| Q.201321: 21 binders can make a binding of 1400 books in 15 days, how many binders are needed to make a booklet of 800 books in 20 days? |
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