What is the difference between the number of students from Delhi in colleges N and Q ........

Quantitative Aptitude ( CCS) Pie Chart

Number of students studying in different streams in six engineering colleges

Colleges	Computer Science	Electrical Engineering	Electronics	Civil	Mechanical	Others
M	250	320	160	272	128	150
N	120	210	200	150	180	220
O	220	150	220	160	200	120
P	180	170	140	128	100	172
Q	240	220	180	170	190	200
R	160	200	150	190	150	160

Pie-charts show the distribution of students in different states in colleges N and Q.

What is the difference between the number of students from Delhi in colleges N and Q?

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Explanation:

Explanation :
Total number of students in college N = 1080
Number of students from Delhi in college N = 1080 * (20/100) = 216
Total number of students in college Q = 1200
Number of students from Delhi in college N = 1200 * (12/100) = 144
Difference = 216 – 144 = 72