Question

Peter spends 18.50 to buy a chocolate and 23.50 to buy a toothbrush which of the two items is costlier the chocolate or the toothbrush and by how mach

Answer 1

Answer:

Answer:

(3) Rs 1800

Step-by-step explanation:

According to the information provided in the question it is given as

120 copies of a book cost= Rs 540

We need to find what will 400 copies of this cost?

Here we use a simple equation for solving this question

Let us assume x is the cost of 400 copies

120 copies = 540 Rupees

400 copies = x Rupees

Now by simple cross multiplication we get the value of x which is the cost value of 400 copies

\begin{gathered}120=540\\ 400= x\\ \end{gathered}

120=540

400=x

\begin{gathered}120 x =540\times 400\\ 120 x= 216000\\ x = \frac{216000}{120} \end{gathered}

120x=540×400

120x=216000

x=

120

216000

Cutting the zero on denominator and numerator

\begin{gathered}x =\frac{21600}{12} \\ x = 1800\end{gathered}

x=

12

21600

x=1800

Hence cost of 400 copies is 1800

Hence option (3) Rs 1800 is correct