Question
Pipe A can empty a completely filled tank in 40 hours.
Pipe B and A together can fill an empty tank completely in (z+4) hours. The efficiency of pipe B is 60% more than the efficiency of pipe C. Pipe B and C together can fill the empty tank together in 20 hours. Find out the value of ‘z’.(Calculate values approximately)Solution
ATQ, Let’s assume the capacity of the tank is 480 units. Efficiency of Pipe A = 480 / 40 = -12 units/hour. The efficiency of pipe B is 60% more than the efficiency of pipe C. Let’s assume the efficiency of pipe C is ‘2c’. Efficiency of pipe B = 2c of (100+60)% = 2c of 160% = 3.2c Pipe B and C together can fill the empty tank together in 20 hours. (3.2c + 2c) x 20 = 480 5.2c = 24 c = 480 / 104 c = 4.615 (approx) Pipe B and A together can fill an empty tank completely in (z+4) hours. (3.2c - 12) x (z+4) = 480 (3.2x4.615 - 12) x (z+4) = 480 (14.768 - 12) x (z+4) = 480 2.768 x (z+4) = 480 (z+4) ≈ 480 / 2.768 z ≈ 173.12 - 4 z ≈ 169.12 Value of ‘z’ ≈ 169.12. or 169
In this question, the sentence is divided into three bold parts labeled as (A), (B) and (C). Identify the part in which the error is located. If you fi...
Identify the form of each sentence given here from among the choices given below it:
She was so poor that she could not educate her son.
The magnetic field of the Galaxy could gradually act on the dust particles and cause their rotational axes to line up in such a way that their short ax...
Synonym (Most nearest meaning) of ORATOR is
The wolf chased them down the lane and almost (catch) them.
You must pay the fees _____a week
S1: In the roll call of human history, the sleepy capital town of Madhya Pradesh is indelibly linked with one of the world's worst man-made catastrophes...
The census may be an independent (A) exercise, but one that needs adequate (B) thought and preparation, if its ultimate goal is not for political or ele...
1. People of all age groups could get benefitted if India creates enough services for the elderly and follow an elderly prioritised approach for some de...
From the options given below, select the option which states the correct combination of correct sentences.
- The fact is...