Page 242 - Maths Skills - 8

4 Maths

2. In which subject Aditi scored lowest marks? [1]

(a) English literature (b) Sanskrit (c) Geography (d) Mathematics
3. What is the percentage of Aditi in maths and science marks together? [2]
(a) 86.33% (b) 84% (c) 88% (d) 90%

4. How many more marks are required to get total 90% in Sanskrit? [1]
(a) 5 (b) 4 (c) 6 (d) 8

Case Study - 4

Sophia is an employee of MNC Company earns ` 62000 per month
as a salary. Income and expenditure are directly proportional to
each other while saving and expenditure is inversely proportional
to each other. Sophia generally spend 70% of the salary and saves
30% of salary.
Based on the given information answer the following questions:

1. Last month, Sophia increased her expenditure to 80% of her salary then how much amount she saved last
month. [1]

(a) ` 12400 (b) ` 6200 (c) ` 8400 (d) ` 7200
2. Next month, Sophia wants to increase her saving till 40% then how much she decreases her expenditure. [1]

(a) ` 6200 (b) ` 24800 (c) ` 37200 (d) ` 5400
3. If Sophia salary increases 30% then how much more she can spend generally? [1]

(a) ` 13200 (b) ` 13020 (c) ` 31020 (d) ` 12300
4. Find the percentage of increment in saving after 30% increase of salary. [2]
(a) 12% (b) 30% (c) 22.22% (d) 25%

Case Study - 5

In a class, six students are chosen for the assigned activities.
Each student asked to bring one quadrilateral object shape
like trapezium, Rhombus, square, Kite etc.
Based on the given information answer the following
questions:

1. Two adjacent angles of a writing Board (parallelogram)
are (3x + 20)° and (2x + 10)°. There exact values
are. [2]
(a) 110°, 70° (b) 150°, 30°

(c) 100°, 80° (d) 120°, 60°
2. The diagonal of the writing board (rhombus) _____________each other. [1]

(a) Bisect (b) Complementary (c) Supplementary (d) can’t be determine