exam Maths Puzzle Numerical Ability

solve -6x-5<13

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exam Other Question

Y=3x+5
2y-6x=4
using substitution A ship enters the Red Sea from the Suez Canal, moving south at 28.0 km/h. Two hours later, a second ship enters the Red Sea at the southern end, moving north at 35.0 km/h. If the Red Sea is 2230 km long, when will the ships pass ???