exam Maths Puzzle Numerical Ability

two cars leave an intersection at the same time and travel in opposite directions. one car travels at 20mph and the other car travels at 60mph how long will it take for the two cars to be 240 miles apart?

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Question: A long-distance phone call cost $1.00 for the first minute and $0.55 for each additional minute or portion thereof. Write an inequa P(E1)=0.25, P(E2)= 0.75, P(F|E1)=0.05, p(F|E2)=0.12

P(E2|F)=



A. 0.188
B. 0.878
C. 0.060
D. 0.370