Advertisements
Advertisements
प्रश्न
A mess contractor can either serve 450 students with the meal that he prepares or can cater to 270 cops with the same meal. If 300 students have already eaten in the mess, how many cops can be fed with the remaining meal?
पर्याय
20
45
90
180
उत्तर
90
Explanation:
Let the total amount of meal is P.
Amount of meal required by each student
`="P"/450`
Amount of meal required by each cop
`="P"/450`
A meal took by 300 students
`=300/450 "P"=2/3 "P"`
Remaining meal `="P"-2/3"P"="P"/3`
Number of cops can be taken a meal in `"P"/3`
`=("P"/3)/("P"/270)=270/3=90`
APPEARS IN
संबंधित प्रश्न
A child was born on 13th January 1976 which was a Tuesday. What day of the week will be the child‘s birthday in the year 1986?
A die is rolled twice What is the probability that the sum of the numbers on the two faces is 5?
Two dice are tossed. The probability that the total score is a prime number is
In a class, 30% of the students offered English, 20% offered Hindi and 10% offered both. If a student is selected at random, what is the probability that he has offered English or Hindi?
A box contains 5 brown and 4 white socks. A man takes out two socks. The probability that they are of the same colour is
The probability that a contractor will get a plumbing contractor is `2/3`. and the probability that he will not get an electric contract is `5/9`. If the probability of getting at least one contract is `4/5` what is the probability that he will get both?
A Chartered accountant applied for a job in two firms X and Y. The probability of his being selected in firm X is 0. 7 and being rejected at Y is 0.5 and the probability of at least one of his applications being rejected is 0.6. What is the probability that he will be selected at least one of the firms?
Kings and Queens of black colour are taken out from a deck of 52 playing cards. A card is drawn from the remaining well-shuffled cards. Probability of getting a spade card is:
If 10Pr = 5040, Find the value of r.
In tossing three coins at a time, the probability of getting at least one heads is:
