Q61 of 97 Page 107

Omar helps his mother 1 hour more than his sister does.

Let sister’s helping hours = x hours

Then, Omar’s helping hour = sister’s helping hour + 1 = (x+1) hours

Thus, required expression = (x+1) hours

The perimeter of an equilateral triangle, if side of the triangle is m.

Area of the rectangle with length k units and breadth n units.

Two consecutive odd integers.

Two consecutive even integers.