Question

If a mobile cost Rs. 2786, then 257 mobile costs?
( a ) Rs. 716002
( b ) Rs. 4279
( c ) Rs. 72002
( d ) Rs. 716232

Answer 1

Hint: In this question what we have to do is we are provided with the cost of one mobile and what we have to find is the cost of 257 mobiles. The cost of each mobile is the same so we can just multiply the number of mobiles with the cost of one mobile which will result in the cost of 257 mobiles.

Complete step by step answer:
It is known that the cost of one mobile is equal to Rs. 2786 that means if someone buys a mobile phone it will cost you Rs. 2786.
Now, in question it is asking if someone buys 257 such mobiles then how much he will need to spend.
So, let the spending done by a person to buy 257 such phones be x in rupees that is Rs. x .
As all phones are of the same cost then we can say that the cost of 257 phones will be equals to Rs. $2786\times 257$ .
So, x = Rs. $2786\times 257$
Simplifying the numerical multiplication, we get
Rs. $2786\times 257$ = Rs. 7,16,002 .

So, the correct answer is “Option a”.

Note: See, we are provided with the cost of one unit and we have to find the cost of more than one unit that is why we will multiply the number of units with the cost of one unit. Calculation must be accurate and should be done carefully as we have to multiply numbers of more than 2-digits. Always remember to place Rs. before numerical answers to differentiate between unit and unit cost.