Simplification Test 8

Question : 27 of 40

Marks: +1, -0

What fraction of

4/ 7

must be added to itself to make the sum

1 1/ 14

Solution:

4/7+4/7x=15/14

⇒4/7(1+x)=15/14

∴x=15/14×7/4-1

=15/8-1=7/8

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