b) A rectangular garden pond has a length 60 cm more than its width. The pond has a 50 cm wide path around its perimeter. If the area of the path is 5.6 m2 , find the width of the pond.

c) A father is concerned about his son’s progress in Mathematics. In order to encourage him, he agrees to give him 10 cents for every problem he solves correctly and to prenalise him 15 cents for every problem he gets wrong. The boy completed 22 problems for homework. How many problems did the girl get correct?

d) When a mathematics teacher was asked her age she replied, “One-fifth of my age three years ago when added to half my age last year gives my age eleven years ago.” How old is she?