Home › SBI PO › Quantitative Aptitude › Mensuration › 72 per cent of 25 students are interested in mat…
72 per cent of 25 students are interested in mathematics. How many are not interested?
A7
B18
C8
D6
Answer & Solution
Correct answer: A. 7
1. Students not interested = 100 - 72 = 28 per cent.
2. 28 per cent of 25 = (28/100) x 25.
3. = 7 students.
4. Check: 18 interested plus 7 not interested makes the full 25.
_Source: NCERT Class 8 Maths Ch7 'Comparing Quantities', Exercise 7.1 Q3_
Related questions
The study of surface areas is extended here to spheres and:Which solids were studied in earlier classes for surface area and volume?The r in the hemisphere formulas is the radius of the:The total surface area of a hemisphere of radius r is:A solid hemisphere has how many faces?The curved surface area of a hemisphere of radius r is:The curved surface area of a hemisphere is what fraction of the sphere's?Cutting a sphere into two equal halves gives two: