book Maths Puzzle Numerical Ability

5_6_7=121 Please help I can't solve this equation.

Read Solution (Total 0)

book Other Question

solve 2d^2 + 8d +3 = 3

x=-8+ square root 8^2-3-

x=-8 plus/minus square root 40/4
A fisherman takes his boat out to sea and then back to the harbor. The entire trip lasts 8 hours. If he travels out at 18 mph and follows the same route back at 14 mph, how many miles does he travel altogether?