Question

The cost of one kilogram apples is ₹ 51/2. What is the cost of 3/2 kilogram apples? ​

Answer 1

Step-by-step explanation:

cost of 1 kg apple = 51/2

cost of 3/2 kg apple = 51/2*3/2

= RS 153/4

Answer 2

Let the digit in units place be x. 

Then, digit in ten's place =3x

So, original number =10(3x)+x=31x

On interchanging the digits, new number =10x+3x=13x

According to the given condition,

31x+13x=88

⇒44x=88⇒x=2

So, the original number is 31x or 31×2=62.

On the other hand, if we consider the digit in ten's place as x, then the digit in unit's place will be 3x.

So, the resulting number we get is 26.

Here, both answers are correct, as 26+62=88.