Directions: Read the following information to answer the question.
The tea is poured three times from the cup before it is emptied.
If 100 is the capacity of the saucer, ( it is always to be filled only to 90 level).
- the first time, tea poured is 90
- the second time tea poured is 75
- the third time tea poured is 75
- Total tea is 240
This is 90% of the capacity of the cup. So, capacity of the cup = 240/0.9 = 266^2/3
Ratio of the capacities of cup & sauces
= 266^2/3: 100
= 2^2/3 : 1 = ^8/3 : 1 = 8 : 3
Directions: Read the following information to answer the question.
Answer : Rs 72
Directions: Read the following information to answer the question.
20% of A : 30% of B : 25% of C = 4 : 9 : 10. Solve to get the answer.
Directions: Read the following information to answer the question.
Let, hundred’s digit = x,
Ten’s digit = y and units digit = z
x + y = z + 1 -------------------(1)
x2 + 1 = y -----------------------(2)
x2 + y2 = z2 - 7 ----------------(3)
x + x2 + 1= z + 1
⇒ z = x2 + x
⇒ z2 = x4 + 2x3 + x2---------------(4)
Also, x2 + (x2 +1)2 = x4 + 2x3 + x2 –7
⇒ 2 x3 - 2 x2 = 8 x3 - x2 - 4 = 0
⇒ (x-2) (x2 + x + 2) = 0
x = 2, (since x2 + x + 2 = 0 gives imaginary roots)
∴ From (2), y = (2)2 x2
⇒ Z = x + y – 1 = 2 + 5 – 1 = 6
∴The number is 256
Note : The best approach here is clearly back substitution from the given answer choices.
Directions: Read the following information to answer the question.