exam Maths Puzzle Numerical Ability

(1+r)^3=1.560896
Solve for r.

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exam Other Question

an engineer is required to report at station B every morning. at afixed time. when he left station A at 8:00 A.M and walked at 1.8 kph, he arrived at B, 5 minutes late. how far in km station B from station A? what is his appointment time at B. this one has varibles and divison again

x^2-16/x^2-8X+16

i started by breaking it down so dar ive got

(x-4)(x+4)/(x-4)(x-4)