If w is 10% less than x, and y is 30% less than z, they wy is what percent less than xz?

1. If w is 10% less than x, and y is 30% less than z, they wy is what percent less than xz?

[Senior Officer 2019 [MCQ] : 2019]

1. 10%

2. 20%

3. 37%

4. 40%

Answer

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