36 kg of gunpowder contains 27 kg nitre

36 kg of gunpowder contains 27 kg nitre, 5.4 kg charcoal and rest sulphur. Find the percentage content of sulphur in the gunpowder.

Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 7 Percentage Check Your Progress 5

75% of the students in a class passed an exam. If 2 more students had passed the exam. 80% would have been successful. How many students are there in the class ?

Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Chapter 7 Percentage Check Your Progress 6

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