Question

A poster mesuring 20×80 cm is pasted on a sheet.of cardboard such that there is a margins of 3:5cm along each side of the poster .find the of cardboard used at the rate of 1.50 per sq cm

Answer 1

area of rectangle =20×80=1600

sheet of cardboard of 3:5=3x+5x=8×

8×=1600÷8=200

cardboard used at rate of 1.50

200×1.50

=300

answer