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In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class
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Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?
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Find two numbers if their ratio is 4: 7 and their difference is 123.
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8+ log(7x+15)=7solve the following logarithmic expression...
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