a shopkeeper sold a certain number of toys.the number of toys as well asthe price of each toy in rs was a two digit number.By mistake, he reversed the digits of both the number of toys he sold and price of each toy. as a result , he found that his stock account at the end of the day showed 81 items more than it actually was.

q1. find the actual number of toys sold?
a.92 b. 81 c.90 d.21
q2 if the faulty calculation show a total sale of rs 882, find the actuall selling price of each toy in rs?
a.89 b.98 c.97 d.79
q3. using the information in the previous question, find his actual sales revenue in rs.
A. 8010 B.8820 C. 7830 D. 8280

I did the first question for you here:

https://www.jiskha.com/questions/1767187/A-shopkeeper-sold-a-certain-number-of-toys-The-number-of-toys-as-well-as-da-price

The other two parts make no sense to me

To solve these questions, you need to follow a step-by-step approach. Let's analyze each question individually:

Q1. Find the actual number of toys sold?
To find the actual number of toys sold, you need to find the difference between the reversed digits and subtract 81 from it. Let's break down the steps:

Step 1: Reversed number of toys - Actual number of toys = 81

Let's assume the reversed number of toys is xy, where x represents the tens digit and y represents the units digit of the number of toys.

Reversed number of toys = 10y + x
Actual number of toys = 10x + y

Step 2: Set up the equation:
10y + x - (10x + y) = 81

Step 3: Simplify the equation:
9y - 9x = 81

Step 4: Divide both sides by 9:
y - x = 9

Now, we need to find a two-digit number where the difference between its digits is 9 (e.g., 92 or 29). Checking the options given:

A) 92:
9 - 2 = 7 (not 9) - Incorrect

B) 81:
8 - 1 = 7 (not 9) - Incorrect

C) 90:
9 - 0 = 9 - Correct

D) 21:
2 - 1 = 1 (not 9) - Incorrect

Therefore, the actual number of toys sold is 90 (option C).

Q2. If the faulty calculation shows a total sale of Rs 882, find the actual selling price of each toy in Rs?
To find the actual selling price of each toy, we again need to find the reversed digits. Let's break down the steps:

Step 1: Reversed price - Actual price = Rs 882

Similar to the previous question, let's assume the reversed price is rs, where r represents the tens digit and s represents the units digit of the price of each toy.

Reversed price = 10s + r
Actual price = 10r + s

Step 2: Set up the equation:
(10s + r) - (10r + s) = 882

Step 3: Simplify the equation:
9s - 9r = 882

Step 4: Divide both sides by 9:
s - r = 98

Checking the options given:

A) 89:
8 - 9 = -1 (not 98) - Incorrect

B) 98:
9 - 8 = 1 (not 98) - Incorrect

C) 97:
9 - 7 = 2 (not 98) - Incorrect

D) 79:
7 - 9 = -2 (not 98) - Incorrect

Therefore, none of the options match the actual selling price of each toy in Rs.