Sangeeta wants to buy a soap that costs < 10.
She has a five-rupee coin, 2 one-rupee coins and 5 fifty-paise coins. How much more money does she need to buy the soap?

The correct option is ₹ 0·50.

Let's solve the problem step-by-step to find out how much more money Sangeeta needs to buy the soap.

Step 1: Calculate the total cost of the soap.
Cost of the soap = ₹ 10

Step 2: Calculate the total money Sangeeta currently has.
Sangeeta has three types of coins:
1. One five-rupee coin:
$1\times \text{₹ }5=\text{₹ }5$
2. Two one-rupee coins:
$2\times \text{₹ }1=\text{₹ }2$
3. Five fifty-paise coins (Note: ₹ 1 = 100 paise, so 50 paise = ₹ 0.50):
$5\times \text{₹ }0.50=\text{₹ }2.50$

Now, add all these amounts together to find the total money Sangeeta has:
Total money possessed = ₹ 5 + ₹ 2 + ₹ 2.50 = ₹ 9.50

Step 3: Find out how much more money she needs.
Money required = (Cost of the soap) - (Total money Sangeeta has)
$\text{Money required}=\text{₹ }10.00-\text{₹ }9.50=\text{₹ }0.50$

Therefore, Sangeeta needs ₹ 0·50 more to buy the soap.