A) 5
B) 15
C) 25
D) 30
E) None of these
Correct Answer: B
Solution :
\[\frac{1020\times 25}{100}-\frac{1220\times ?}{100}=72\] \[\Rightarrow 255-\frac{1220\times ?}{100}=72\] \[\Rightarrow \frac{1220\times ?}{100}=255-72=183\] \[\Rightarrow ?=\frac{183\times 100}{1220}=15\]You need to login to perform this action.
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