exam
Maths Puzzle
Numerical Ability
the larger of two numbers is 1 more than 3 times the smaller. the difference between 8 times the smaller and 2 times the larger is 10. find the numbers.
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One grocery clerk can stock a shelf in 20 minutes, whereas a second clerk requires 30 minutes to stock the same shelf. If the two clerks worked together, how long would it take them to stock the shelf ?
in need of help with solving this system: {x^2-100y^2=100
{x^2+ y^2=100
thanks for the help.