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The cost of a note book is Rs.10ab. If Babu has Rs. (5a^2b + 20ab^2 + 40ab). Then how many note hooks can he buy?

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The cost of a note book is Rs.10ab. If Babu has Rs. (5a2b + 20ab2 + 40ab). Then how many note hooks can he buy?

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For ₹ 10 ab the number of note books can buy = 1.

+1 vote
by (50 points)
Cost of one note book = 10ab

Babu has total Rs. = 5a^2b + 20ab^2 + 40ab

So,  total note books can by Babu=

 ( 5ab^2b + 20ab^2 + 40ab) / 10ab

={ 5ab(a + 4b + 8)}/ 10ab

 = (a + 4b + 8)/2
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