Question

Find the sum of 0.9, 1.9, 19.9, 1.99, 1.999, 199.9 and 1999.9​

Answer 1

Answer:

Step-by-step explanation:

Given, SP1 = Rs 168

          Profit = 20%

 Hence, SP1 is 120% of CP1

=>168 = ×CP1

=>CP1 = 168×5/6

           =28×5 = 140

Now, cost of production is increased by 30%

So, new cp, CP2 = 140×

                           = 14×13 = 182

As per question, new profit percentage should be same as previous .

Hence new SP, SP2 = CP2 ×120%

                                = 182 ×

                                = 182 ×1.2 = 218.4

Increase in price of box = SP2-SP1

                                     = 218.4 -168

                                     = 50.4

 Ans : Rs 50.40          

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Answer 2

The sum of those numbers mentioned above :

= 0.9+1.9+19.9+1.99+1.999+199.9+1999.9

= 2,226.489(ans)

Hope it was helpful to u.....