Question

A number increased by 20 then reduced by 15 becomes 10. What is the number?​

Answer 1

Answer:

the number is 5

Step-by-step explanation:

Let 'x' be the unknown number

$x + 20 - 15 = 10$

$x + 20 = 10 + 15$

$x + 20 = 25$

$x = 25 - 20$

$x = 5$

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