Unknown number 5

Daniel thinks of an integer. When he change this number at a ratio of 2:5, he got the number 2.8. Determine what number Daniel thinks.

Correct answer:

x =  7

Step-by-step explanation:


x·2/5= 2.8

2x = 14


x = 14/2 = 7

x = 7

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Showing 1 comment:
Nigo
2 more than the ratio of two unknown numbers





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