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7. What is the single discount equivalent to the two successive discounts of 25% and 12%?

8. Find the exterior angle of a regular polygon of 12 sides.
9. Construct a rhombus PQRS with RS = 8 cm and one of the angle is 60°.

10. Case Study based Question
A survey was conducted among 150 secondary school students, and they were asked about
how much time they spend on tuition and how much time on self-study. The distribution
of students according to the time they take tuition is 30% for 1.5 h to 2 h, 20% take tuition
for 1 h to 1.5 h, some of them take tuition for more than 2 hours, and 60 students did not
take tuition at all.
Based on the above information answer the following questions:
(a) How many students take tuition for 1 h to 1.5 h?

(b) How many students take tuitions more than 1.5 h?
(c) What is the percentage of students who took tuitions for more than 2 hours?
(d) Find the percentage of students who do self-study.

193 Model Test Paper – 1