CTET Maths - Algebra
- Option : A
- Explanation : Average speed = Total distance covered / Total time taken. = (240 + 260) / (5+5) = 500/10 = 50 km/h
- Option : C
- Explanation : Here a= 25%. Required percentage = [a / (100+a)] x 100% . = (25/100) x 100 % = 20%
- Option : A
- Explanation : Let the number be x.
According to the question,
(78 - 59)%of x = 323 => (19 × x)/100 = 323.
=> x = (323 x 100) / 19 = 1700.
=> 62% of 1700 = (62 x 1700) / 100 = 1054
15. 8% of A is equal to 4% of B, then 20% of A is
- Option : A
- Explanation : (8/100) x A = (4/100) x B ⇒ (2/100)A = (1/100)B ⇒ (20/100)A = (10/100)B ⇒ 20% of A = 10% of B
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