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Maths Puzzle
Numerical Ability
8x+13x-4=0
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In a walkathon to raise money, Elisa walked a certain distance at 5 mph and then jogged twice that distance at 8mph. Her total time walking and jogging was 2 hours and 15 minutes.
find the third, fourth and fifth terms.
t sub(1) = 6; t sub(n) = t sub(n-1) + 4