SOLUTION: Given that 4x/5 – 1/10 ≤ x –2/5, state the smallest value of x when: i) x is an integer ii) x is a prime number iii) x is a rational number

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(4x)/5 -1/10 <= x-2/5
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multiply by 10
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8x -1 <= 10x -4
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3 <= 2x
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3/2 <=x,,,,,or x>= 1.5
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i),,,, 2,,smallest integer > 1.5
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ii),,, 2,, smallest prime > 1.5
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iii),,,3/2, smallest rational number >=1.5
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