Number increases

We increased the unknown number by 29% once and 41% the second time. The difference between the new numbers was 420. What was the unknown number?

Final Answer:

x =  3500

Step-by-step explanation:


1.41·x-1.29·x = 420

0.12x = 420


x = 420/0.12 = 3500

x = 3500

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