Question

rani decides to cover her entire desk with chocolate bars. Her desk is 1 m long and 30cm wide. Each chocolate bar is 10cm long, 5cm wide and costs 20 rupees. How much will it cost Rani to cover her entire desk with chocolate bars ?​

Answer 1

Answer:

Cost of all the chocolates = ₹1200

Step-by-step explanation:

First of all, we have to find the number of chocolates. Then their cost...

$Number of chocolates = \frac{Area of whole desk}{Area of one chocolate bar}$   [ Remember : 1 m = 100 cm ]

Area of whole desk = $lb$

                                  = 100 cm × 30 cm

                                  = 3000 cm²

Area of one chocolate = $lb$

                                       = 10 cm × 5 cm

                                       = 50 cm²

Therefore, no: of chocolates = $\frac{3000 cm }{50 cm}$

                                                 = 60 chocolates

 

Cost of 1 chocolate =  ₹20.

Therefore, Cost of 60 chocolates = Cost of 1 chocolate × No: of

                                                             chocolates.

                                                          = ₹20 ×   60

                                                          = ₹1200                                

                                       

Answer 2

Answer:

Dont know

Step-by-step explanation:

Pls explain the question better. I am not understanding...