What was the original number if after an increase of 40%, it became 420.

The number which becomes 420 after 40% increase. Hence, the original number is 300.

Step-by-step explanation:

Given information:

After increase of 40% the number becomes 420

Let , the original number is

So, according to the question:

We can write

Hence , the original number is 300.

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300

Step-by-step explanation:

Solve for x.

x+(2/5*x)=420

x=300

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

i think it would be 42cm