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Maths Questions for CTET,KVS Exam : 5 november 2018

Maths Questions for CTET,KVS Exam : 5 november 2018_30.1
Dear Students!!! There is most general as well as a scoring section in all the competitive entrance examinations in the teaching field i.e “Mathematics”.Because in this section only one thing is work i.e your accuracy and that could be nourished with the daily practice. So, for this, we are providing you the daily quiz for all teaching exams i.e CTET Exam 2018, DSSSB ,KVS,STET Exam.

Q1. The average age of 5 members of a family is 24 years. If the youngest member is 8 years old, then what was the average age (in years) of the family at the time of the birth of the youngest member?
(a) 16
(b) 20
(c) 24
(d) 32

Q2. If the price of pen decreases by 20%, then a man can buy 10 more pens for Rs 100. What is the new price (in Rs) of each pen?
(a) 1
(b) 2
(c) 4
(d) 5

Q3. After deducting 60% from a certain number and then deducting 15% from the remainder, 1428 is left. What was the initial number?
(a) 4200
(b) 3962
(c) 4150
(d) 4300

Q4. A train travels 40% faster than a car. Both start from point A at the same time and reach point B, 140 km away at the same time. On the way the train takes 25 minutes for stopping at the stations. What is the speed (in km/hr) of the train?
(a) 67
(b) 134.4
(c) 145.9
(d) 160

Q5. A certain sum of money triples itself in 5 years at simple interest. In how many years it will be five times?
(a) 5
(b) 8
(c) 10
(d) 15

Maths Questions for CTET,KVS Exam : 5 november 2018_40.1

Q10. The perimeter of an isosceles triangle is 32 cm and each of the equal sides is 5/6 times of the base. What is the area (in cm2) of the triangle ?
(a) 39
(b) 48
(c) 57
(d) 64

Solutions

S1. Ans.(b)
Sol. Let the average age of the family at the time of the birth of youngest member be x
∴ 24 × 5 – 8 × 5 = x × 4
⇒ x = 20 years


S2. Ans.(b)
Sol. Let the old price of one pen be Rs x
∴ new price of one pen = Rs 0.8x
ATQ,
100/0.8x-100/x=10
⇒ (100-80)/0.8x=10
⇒ 20 = 8x
⇒ x=20/8
∴ New price = 0.8 × x = 20/8×0.8=Rs 2

S3. Ans.(a)
Sol. Let the initial number be x
∴ x × 0.4 × 0.85 = 1428
⇒x=1428/(0.4×0.85)=4200

S4. Ans.(b)
Sol. Let speed of the car be x km/h
Then the speed of the train will be 1.4x km/h
∴ ATQ,
140/x-140/1.4x=25/60
⇒ (140×1.4-140)/1.4x=25/60
⇒1.4x=672/5
⇒ x = 96 km/h
∴ Speed of train = 1.4x
= 1.4 × 96 = 134.4 km/h

S5. Ans.(c)
Sol.
Rs 2 SI in → 5 years
∴ Rs 4 SI in → 5/2×4 = 10 years

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