exam Maths Puzzle Numerical Ability

A girl buys three apples and seven oranges for $4.56. If an orange costs $0.28 more than an apple, how much does each fruit cost?

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exam Other Question

write the equation of the line with slope-2 and y-intercept(0,0). then graph the line a forest contains about 500 trees. You randomly pick 67 trees and find that 27 of them are oaks. What is the experimental probability that a tree in the forest is an oak?