Multiple Choice QuestionsIf 7 spiders make 7 webs in 7 days, then 1 spider will make 1 web in how many days?
7
7
A fan is listed at ₹ 150/- with a discount of 20%. What additional discount must be offered to the customer to bring the net price to ₹ 108/-?
15%
8%
8%
Three numbers are in the ratio 1 : 2 : 3 and the sum of their cubes is 4500. The smallest number is
4
5
6
6
B.
5
Let the numbers be x, 2x and 3x respectively.
  According to the question,
 (x)3 + (2x)3 + (3x)3 = 4500
⟹ x3 + 8x3 + 27x3 = 4500
            36x3 = 4500
             
            
⟹       x = 5
∴       x = 5
∴  Smallest number = 5
If by selling an article for ₹ 390/- a shopkeeper gains 20%, then the cost is
₹ 370/-
₹ 325/-
₹ 350/-
₹ 350/-
There is a 4% increase in volume when a liquid freezes to its solid state. The percentage decrease when solid melts to liquid again, is
4%
A man travelled a distance of 61 km in 9 hours, partly by walking at a speed of 4 km/hr and partly on bicycle at speed of 9 km/hr. The distance covered by walking is
16 km
12 km
15 km
15 km
The rate of simple interest per annum at which a sum of money double itself in 
, is:
4%
5%
6%
6%
In Δ ABC, DE || AC, where D and E are two points lying on AB and BC respectively. If AB = 5 cm and AD = 3 cm, then BE : EC is
2 : 3
3 : 2
5 : 3
3 : 5
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