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### Primary 5 Problem Sums/Word Problems - Try FREE

- Whole Numbers And Fractions: Time for a little challenge! > Whole Numbers & Fractions Exercise 30 > 1
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**Question
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There are 2 identical tubs, tub A and tub B on a table.

Both tubs contained some water.

Tub B is `31/40` filled with water and tub A is `2/5` filled with water.

The mass of tub A with water in it is `6/11` of the mass of tub B with water in it.

The total mass of both tubs with the water contained within them was measured to be 255 kg.

What is the total mass of 2 identical empty tubs?

The correct answer is :

**20**