math

	puts "\n\nAre you ready for some math?\n\n"
	puts "How many questions do you want?\n\n"

	i=gets.chomp
	i=i.to_i

	puts"\n\n"

	    correct_answers=0
		wrong_answers=0
		start_time=Time.new

i.times do 
			
		num1=rand(10)
		num2=rand(10)


	puts "#{num1}*#{num2} "


	answer=gets.chomp

	correct_answer=num1*num2

	if answer.to_i==correct_answer

			puts "\nCorrect!\n\n"
			correct_answers+=1

	else

		puts "\nWRONG!!! \nThe correct answer is #{correct_answer}\n\n"
		wrong_answers+=1
	end
end

percent_correct=(correct_answers.to_f/i)*100
end_time=Time.new
how_long=end_time-start_time

if i!=0
	puts "\n\nYou had #{correct_answers} correct answers and #{wrong_answers} wrong answers!\n\nYou answered #{percent_correct}% of the questions correctly and it took you #{Time.at(how_long).utc.strftime("%H:%M:%S")} (hours/mins/secs) to answer all the questions!\n\n"
	case percent_correct
	when 100..100
		puts"You did an amazing job and answered all questions correctly!!! You are THE BEST!!!"
	when 80..99
		puts "You did a great job, keep up the good work!"
	when 50..79
		puts "You did a good job, but you should try and improve your multiplication skills."
	else 
		puts "You did not do very well...You should study your multiplication table more and try again."
	end
			
else
	puts"\n\nMaybe next time...Goodbye!"
end