Answer:
10 seconds
Step-by-step explanation:
using the formula we can see that since 30 seconds have passed we divide this by 3 to get 10.
Therefore the answer is 10 seconds
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See this question for an example.
brainly.com/question/8829608Step 1. Read and understand the description of the problem.
Step 2. Identify what the problem is asking you do do.
Step 3. Identify the given information and the given relationships.
Step 4. Use your knowledge of the relationships associated with the parts of the problem, along with the result of Step 3, to write equations relating the given information and the information you are asked to find.
Step 5. Solve those equations using the rules of algebra.
Step 6. Check to make sure your solution satisfies all of the problem conditions and requests.
_____
With respect to the example problem above, you are expected to know how the total bill is calculated when you make a purchase. A lot of people act like they don't understand how this works, even though they have been shopping many times. This is what is meant by Step 4--use your knowledge.
Step-by-step explanation:
Rs8,100 / (Rs45 per square meter)
= 180 square meters.
The area of the 4 walls of the room is 180 sq.m.
2500(100-1)/100
2500(99/100)
2500(0.99)
2475
