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Jashim buys 10 CDs for BDT . 200. If DVDs cost BDT 20 more, how many DVDs can he buy for the same amount?
A
4
B
5
C
6
D
10
Correct Answer:
5
If a sum of taka invested amounts to BDT 460 in 3 years and amounts to BDT 500 in 5 years then what is thr invested sum in BDT?
A
300
B
350
C
400
D
450
Rita buys 5 sarees at an average cost of Rs 2250. If she buys three more sarees at an average cost of Rs 2750, what will be the average (in Rs) of all thesarees she buys?
A
2437.5
B
2500
C
2450
D
2332.5
Jay wants to buy a total of 100 plants using exactly a sum of Rs 1000. He can buy Rose plants at Rs 20 per plant or marigold or Sun flower plants at Rs 5 and Re 1 per plant respectively. If he has to buy at least one of each plant and cannot buy any other type of plants, then in how many distinct ways can Jay make his purchase?
A
3
B
6
C
4
D
2
Jay wants to buy a total of 100 plants using exactly a sum of Rs. 1000. He can buy Rose plants at Rs. 20 per plant or marigold or Sun flower plants at Rs. 5 and Rs. 1 per plant respectively. If he has to buy at least one of each plant and cannot buy any other type of plants, then in how many distinct ways can Jay make his purchase?
A
2
B
3
C
4
D
5
E
None of these
Jashim and Imran start walking from A to B at 5 and 3 km per hour respectively. Jashim reaches B and starts back for A. How far from B will he meet Imran if the distance between A and B is 32 km?
A
6
B
8
C
9
D
12
The standard free energies of formation of H
2
S(g) and CdS(s) at 1000°C are -49.0 kJ/mol and -127.2 kJ/mol respectively. Use these data to predict whether H
2
(g) will reduce CdS(s) to metallic Cd at this temperature.
A
ΔG = -78.2 kJ/mol and H<sub>2</sub> reduces CdS
B
ΔG = -39.1 kJ/mol and H<sub>2</sub> reduces CdS
C
ΔG = 0 kJ/mol and the reaction is at equilibrium
D
ΔG = 78.2 kJ/mol and the reaction is not feasible
Goni went to market with certain amount of money. With this money he can buy either 50 apples or 40 pears. He retains 10% of the money for bus fare and buys 20 pears. How many apples can be buy?
A
18
B
30
C
15
D
20
Which of the following polymer is used as a shrink film for CDs and DVDs?
A
PE
B
PP
C
PVC
D
Polyolefin
The cost of packaging of the mangoes is 40% the cost of fresh mangoes themselves. The cost of mangoes increased by 30% but the cost of packaging decreased by 50%, then the percentage change of the cost of packed mangoes, if the cost of packed mangoes is equal to the sum of the cost of fresh mangoes and cost of packaging :
A
14.17%
B
7.14%
C
8.87%
D
6.66%
Karim can buy single poster boards for 80 paisa each or a package of 12 poster boards for Taka 7.50. How much more (in Taka) would Karim have to pay for 3 dozen poster boards if he buys them individually than if he buys them in packages?
A
6.30
B
2.30
C
5.40
D
None of the above