NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 8: Rational Numbers - Problems and SolutionsQuestion 104
Class 7 - Mathematics - Unit 8: Rational Numbers - Problems and Solutions
Question. 104
150 students study English, Maths or both. 62% study English, 68% study Maths. How many study both?
Answer:
45
Detailed Answer with Explanation:
n(E∪M)=150. Using formula: 150×(0.62+0.68–1)=150×0.3=45.