Decimals and Fractions Practice Test 1

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Question : 8 of 40

Marks: +1, -0

Evaluate:

0.25[(0.15+1/{0.35+2/5})-

(3.5+1/{1.5+4/5})]

6.12
61.2
-0.612
0.612
-0.0612

Solution:

0.25[(0.15+1/{0.35+2/5})-

(3.5+1/{1.5+4/5})]

=0.25[(0.15+1/{3.75})-(3.5+1/{11.5})]

=0.25[(5.5625/{3.75})-( 45.25/{11.5})]

=25/100(55625/37500-4525/1150)

=25/100(89/60-181/46)

=25/100({2047-5430}/1380)

=25/100({-3383}/1380)=-0.612

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