Classify the number −25.
2 answers:
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Answer:
Rs 328
Step-by-step explanation:
Find the <u>principal</u> amount invested.
<u>Simple Interest Formula</u>
I = Prt
where:
- I = interest earned
- P = principal
- r = interest rate (in decimal form)
- t = time (in years)
Given:
- I = Rs 320
- r = 5% = 0.05
- t = 2 years
Substitute the given values into the formula and solve for P:
⇒ 320 = P(0.05)(2)
⇒ 320 = P(0.1)
⇒ P = 3200
<u>Compound Interest Formula</u>
where:
- I = interest earned
- P = principal amount
- r = interest rate (in decimal form)
- n = number of times interest applied per time period
- t = number of time periods elapsed
Given:
- P = 3200
- r = 5% = 0.05
- n = 1 (annually)
- t = 2 years
Substitute the given values into the formula and solve for I:
Therefore, the compound interest on the same sum for the same time at the same rate is Rs 328.
Since, the angle between the machine and angle of press is as shown in the attached image.
Therefore, the actual weight lifted by the power lifter is given by
where 'w' stands for the weight being lifted and is the angle of press.
Now,
actual weight lifted by the power lifter =
= pounds.
