**The figure below is made up of 2 squares, A and B. The ratio of Square A to Square B is 1:4. The shaded part is 1/5 of Square A. What fraction of the whole figure is shaded?**

**Solution**

Shaded part -->

**1 unit**

Area of Square A --> 5 units (shaded area is 1/5 of Area of Square A)

Note that

**Square A has 4 units of unshaded**and 1 unit of shaded area.

Area of Square B --> 4 x 5 units = 20 units (Area of Square B is 4x that of Square A)

Note that

Note that

**Square B has 19 units of unshaded**and 1 unit of shaded area.Total Area

--> 1 unit (shaded) + 4 units (unshaded Square A) + 19 units (unshaded Square B)

=

Fraction of shaded area to area of whole figure

--> 1/24

=

**24 units**Fraction of shaded area to area of whole figure

--> 1/24

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