Question

Find the rational number between 3/8and2/5

Answer 1

(3/8+2/5)/2
(15+16/40)/2
31/40/2
31/80
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Answer 2

3/8 and 2/5

l.c.m of 8 and 5 is 40

=3/8×5 and 2/5×8
=15/40 and 16/40

as there is no rational number between them multiply them with 2

=15/40×2 and 16/40×2
=30/80 and 32/80

therefore a rational number between them is 31/80.

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