exam Maths Puzzle Numerical Ability

In one year, there were 252 accidents in a rural town. The following year, there were 569 accidents. What was the percentage of increase in accidents?

Please provide formula f

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exam Other Question
3y+x+4y+x-5=180
This is the problem my daughter has. 3y+x is the measure of angle ABD & 4y+x-5 is the measure of angle DBC. She must find the answer "what is the measure of angle 7-3=r-4(2+r)