exam Maths Puzzle Numerical Ability

A plane leaves Denver heading due north at 500 mph. Simultaneously, another
plane leaves Denver traveling due east at 1200 mph. After how many minutes
will the planes be 650 miles apart?

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exam Other Question

the difference of "x" and 5 multiplied by the quantity of "z" squared plus 4

a variable "q" divided by 5

this year there were 6 less than twice as many vendors than last year Find the domain of the function F(x)= [(square root of x)/1-(the absolute value of 4x)]