2019
Mathematics
67ca00ce0c643c71d77dee1f
(2/3÷4/5)/(1/4+3/5-1/3)
A.
31/50
B.
20/31
C.
31/20
D.
50/31
Correct Answer: 50/31
Explanation
(2/3÷4/5)/(1/4+3/5-1/3). 2/3÷4/5=2/3×5/4 = 5/6 1/4+3/5-1/3=(15+36-20)/60 = 31/60 ∴ ∴(2/3÷4/5)/(1/4+3/5-1/3)=5/6÷31/60 = 5/6 x 60/31 = 50/31
(2/3÷4/5)/(1/4+3/5-1/3). 2/3÷4/5=2/3×5/4 = 5/6 1/4+3/5-1/3=(15+36-20)/60 = 31/60 ∴ ∴(2/3÷4/5)/(1/4+3/5-1/3)=5/6÷31/60 = 5/6 x 60/31 = 50/31THIS WEEK's
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