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14 Jun 2016, 09:06
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At least 10 cars have tinting window and fog light. 40% cars which have tinting windows also have fog light, is the number of the cars with tinting windows larger than that of the cars with the fog light?
1) 80% cars which have fog light also have tinting windows
2) 52 cars have tinting windows or fog light or both
*An answer will be posted in 2 days.
1) 80% cars which have fog light also have tinting windows
2) 52 cars have tinting windows or fog light or both
*An answer will be posted in 2 days.
14 Jun 2016, 09:32
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MathRevolution
At least 10 cars have tinting window and fog light. 40% cars which have tinting windows also have fog light, is the number of the cars with tinting windows larger than that of the cars with the fog light?
1) 80% cars which have fog light also have tinting windows
2) 52 cars have tinting windows or fog light or both
*An answer will be posted in 2 days.
.....1) 80% cars which have fog light also have tinting windows
2) 52 cars have tinting windows or fog light or both
*An answer will be posted in 2 days.
cars with tinting window = \(C_t....\)
and cars with fog light =\(C_f....\)
and cars with both = \(C_b....\)
now \(0.4 C_t = C_b...\)
lets see the statements ..
1) 80% cars which have fog light also have tinting windows
so \(0.8 C_f = C_b....\)
so \(0.8 C_f = 0.4 C_t.................2C_f = C_t\)
Suff..
2) 52 cars have tinting windows or fog light or both
Just gives total number of cars
Insuff
A
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14 Jun 2016, 13:03
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MathRevolution
At least 10 cars have tinting window and fog light. 40% cars which have tinting windows also have fog light, is the number of the cars with tinting windows larger than that of the cars with the fog light?
1) 80% cars which have fog light also have tinting windows
2) 52 cars have tinting windows or fog light or both
*An answer will be posted in 2 days.
1) 80% cars which have fog light also have tinting windows
2) 52 cars have tinting windows or fog light or both
*An answer will be posted in 2 days.
1) 40% cars which have tinting windows=80% cars which have fog light=cars have tinting window and fog light, So the number of cars which have tinting windows is definitely larger,Sufficient
2) No particular breakdown about cars have tinting windows or fog light or both,Insuficient
Correct Answer A
