P5/P6 Math: Fraction of Remaining (Expert)

The question type below deals with "fraction of remainder".
Each fraction is added with another value to represent an item described.

Such questions often appear in P5 SA2 exam onwards.
This is a paper 2 question so calculator is allowed.

In a box of yellow, green and purple highlighters,
half of the highlighters and another 5 are blue.
1/4 of the remaining highlighters and 4 more are green.
The rest of them are purple highlighters.
There were 11 purple highlighters in the box.
How many highlighters were there altogether?


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