Question
P and Q can do a piece of work in 32 and 40 days
respectively. They began to work together but P leaves after sometimes and Q completed remaining work in 16 days. After how many days did P leaves (in days)?Solution
Let P worked for x days According to question ⇒ `x/32+(x+16)/40` = 1 ⇒ `(5x+4(x+16))/160` = 1 ⇒ 5 x + 4x + 64 = 160 ⇒ 9x = 160 – 64 = 96 ⇒ `x=96/9=32/3 days P left the work after 32/3 days. Alternate Method; P Q 32 40 LCM = 160 units 5 : 4 For last 16 days, Q alone completed = 4 x 16 = 64 units So remaining is done by both = (160 -64)/(5+4) = 96/9 = 32/3 days Hence P left after 32/3 days.
Fill in the blank in the following sentence with the help of the given options.
We had completed our paper when the bell __________.
The _____ of our civilization from an agricultural society to today's complex industrial world was accompanied by war. Â
Choose the correct answer to fill the given blank
My friends and I _____ planning a trip to Europe next summer.
Stop comparing apples to _______________.
- In the following sentence, there is a blank space. Below each such sentence, there are four options with one word each. Fill up the blank with the word tha...
In the following sentences, two words are omitted. Choose the correct option that can fill the blanks both contextually and grammatically.
The ...
Choose the appropriate answer.
To curtail these violations, awareness programmes were regularly ____________ for the food delivery partners with respect to the importance of traffic r...
When requested by a student, family members were _____________ of the difficulties faced by the student.
The villas stand tall ______ coconut groves.Â
Relevant for Exams:
