What approximate value will come in place of question mark (?) in the given questions:
(You are not expected to calculate the exact value)
319.89 - 15.03 x 3.692 = 1039.88 ÷ ?
124.99 x 4.998 + 129.992 - 75.05 = ?
$$\sqrt {239.92 \times 2.995 - 94.95}$$ = ?
For the following questions answer them individually
Jar A contains 78 litres of milk and water in the respective ratio of 6 : 7. 26 litres of the mixture was taken out from Jar A. What quantity of milk should be added to jarA, so that water constitutes 40% of the resultant mixture in jar A?
At its usual speed, a 150 metre long train crosses a platform of length L metres in 24 seconds. AT 75% of its usual speed, the train crosses a vertical pole in 12 seconds. What is the value of L?
In a class, the respective ratio between the number of boys and the number of girls is 3:1. A test was conducted, wherein the average score of the boys was 73, while that of the entire class was 71. What was the average score of the girls?
Two years ago, A’s age was $${1 \over 2}$$ of B’s age at that time. A’s age four years hence will be 22 years less than B’s age eight years hence. What is B’s present age ?
In the following questions two equations numbered I and II are given. You have to solve both the equations and
Give answer a: if x > y
Give answer b: if x ≥ Y
Give answer c: if x < y
Give answer d: if x ≤ Y
Give answer e: if x = y or the relationship between x and y cannot be established.
I. $$3x^{2}+14x+15=0$$
II. $$2y^{2} +19y+44=0$$
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