exam
Maths Puzzle
Numerical Ability
the sum of the ages of petra and her mother is 45. her mother is 9 years more than twice as old as petra. how old are petra and her mother
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k/5+3/20<3/10
in a burger chain customers who use mustard are 80%, who use ketchup are 75% and who use both are 65%. what is the probability that the customers comming in the shop will use mustard, ketchup or both?