P6 Maths - Fractions ( "Before and After" Method )

Chloe had 120 more stickers than Gladys. After Chloe lost 1/5 and Gladys lost 3/4, Chloe had 184 more than Gladys. How many did Gladys have at first?

To use this method, we have to identify a certain number of units for both Chloe and Gladys. Since 20 units can both be divided into 5 parts and 4 parts respectively, it is used here.

Chloe --> Before
= 20 units + 120
- 4 units – 24 ( lost 1/5)

--> After
= 16 units + 96

Gladys --> Before
= 20 units
-15 units ( lost ¾ )

--> After
= 5 units

Using the “After” units, Chloe will have (11 units + 96) more stickers than Gladys.

11 u --> 184 – 96 = 88
1 u --> 88 / 11 = 8
20 u --> 20 * 8 = 160.