Question

Using Identities, Evaluate the following: 1. 512 - 492​

Answer 1

Answer:

(i) CP = Rs.. 1200, SP = Rs.. 1350

CP < SP. So, profit.

Profit = Rs. (1350 - 1200) = Rs. 150

(ii) CP = Rs. 980, SP = Rs. 940

CP > SP. So, loss.

Loss = Rs. (980 - 940) = Rs. 40

(iii) CP = Rs. 720, SP = ?, profit = Rs. 55.50

Profit = SP - CP

⇒ Rs. 55.50 = SP - Rs. 720

⇒ SP = Rs. (55.50 + 720) = Rs. 775.50

(iv) CP = ?, SP = Rs. 1254, loss = Rs. 32

⇒ Loss = CP - SP

⇒ Rs. 32 = CP - Rs. 1254

⇒ CP = Rs. (1254 + 32) = Rs. 1286

Answer 2

Answer:

To evaluate is defined as to judge the value or worth of someone or something. An example of evaluate is when a teacher reviews a paper in order to give it a grade. ... It will take several years to evaluate the material gathered in the survey.