Which general claims about successive changes are true? Select all that apply.
Two successive 10% rises make an overall 21% rise.✓پاسخ درست
A 25% rise followed by a 20% fall restores the starting value.✓پاسخ درست
A 10% fall followed by a 10% rise restores the starting value.
An 8% rise followed by a 12% rise makes an overall 20% rise.
توضیح
Two 10% rises have multiplier 1.10 × 1.10 = 1.21, while 1.25 × 0.80 = 1, so both stated claims are valid. A 10% fall then rise gives 0.99, and rises of 8% and 12% combine to 20.96%, not their simple sum.