Question

15 copies of a book costs is 40.50.5 what is the cost
of a single book?​

Answer 1

$\huge\red{\mathfrak{Answer}}$

Cost of 15 copies = 405.05

Therefore, for calculating the value of 1, i.e from a huge amount to a single pie of amount we divide them, my total number of amount.

So,

$\frac{405.05}{15}$

But, I am confused you wrote 40.50.5, so I have given you the explanation, now I hope it is easy for you to solve it :)

#BeBrainly

Answer 2

$\dag\ \underline{\huge \mathbf{GIVEN}}$

$\color{maroon} {\textsf{15 copies of a book cost Rs. 4050.5.}}$

$\dag\ \underline{\huge \mathbf{TO\ FIND}}$

$\color{aqua} {\textsf{The cost of a single book.}}$

$\dag\ \underline{\huge \mathbf{SOLUTION}}$

$\color{navy} {\textsf{Cost of 15 copies of a single book = Rs.4050.5}}$

$\color{navy} {\textsf{Cost of 1 copy of the book =}\dfrac{4050.5}{15}}$

$\color{orange} {\sf{(Using\ unitary\ method)^*}}$

$\color{navy} {\sf{\longmapsto Cost\ of\ the\ single\ book=Rs. 270.03 }}$

$\color{orange} {\textsf{(Cost of a single copy = cost of a single book)}}$

$\underline{\color{orange} {\textsf{Therefore, the cost of a single book is Rs. 270.03.}}}$

$\rule{160}2$

$\color{aqua} {\textsf{*The unitary method is a technique for solving a problem }}\\\color{aqua}{\textsf{by first finding the value of a single unit, and then finding} }\\\color{aqua}{\textsf{the necessary value by multiplying the single unit value.}}$