exam Maths Puzzle Numerical Ability

1.508 exceeds six times a number by 70. What is the number?

2. seven times a number is 31 8/9. what is the number

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exam Other Question

I am lost on this one

Solve ln(3x+7)+lnx=ln6

Thank you A youth group decide to go bowling. You can rent the number of lanes that you need for $100. The cost per person will drop by $0.50 if they can get ten more people to attend. How many people were in the original group? (Please solve in algebra from?)