Basic Maths Mcqs

Q.  Assume that 20 cows and 40 goats can be kept for 10 days for Rs.460. If the cost of keeping 5 goats is the same as the cost of keeping 1 cow, what will be the cost for keeping 50 cows and 30 goats for 12 days?

a. Rs.1104
b. Rs.1000
c. Rs.934
d. Rs.1210


ANSWER: See Answer
 
Assume that cost of keeping a cow for 1 day = c ,

cost of keeping a goat for 1 day = g
Cost of keeping 20 cows and 40 goats for 10 days = 460

Cost of keeping 20 cows and 40 goats for 1 day = 460/10 = 46

=> 20c + 40g = 46

=> 10c + 20g = 23 —(1)

Given that 5g = c
Hence equation (1) can be written as 10c + 4c = 23 => 14c =23

=> c=23/14
cost of keeping 50 cows and 30 goats for 1 day

= 50c + 30g

= 50c + 6c (substituted 5g = c)

= 56 c = 56×23/14

= 92
Cost of keeping 50 cows and 30 goats for 12 days = 12×92 = 1104
MCQs:  P is able to do a piece of work in 15 days and Q can do the same work in 20 days. If they can work together for 4 days, what is the fraction of work left?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  Two pipes P and Q can fill a cistern in 12 min. and 15 min. respectively but a third pipe ‘R’ can empty the full tank in 6 min. P and Q are kept open for 5 min. in the beginning and then ‘R’ is also opened. In what time is the cistern emptied ?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A and B can together do a piece of work in 15 days. B alone can do it in 20 days. In how many days can A alone do it ?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  Farjan and Kashif can complete a task in 30 days. Farjan leaves after 20 days and Kashif alone completes it in another 25 days. How many days does Farjan alone take to complete the entire task?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  Jameel can complete a task in 15 hours and Nasir can complete the same task in 12 hours. Jameel starts the task at 9:00 am and stops working at 2:00pm. Nasir starts working on the task at 4:00 pm. At what time is the task completed?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  P can do a work in 24 days. Q can do the same work in 9 days and R can do the same in 12 days. Q and R start the work and leave after 3 days. P finishes the remaining work in_________days.
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  Kamal will complete work in 20 days. If Suresh is 25% more efficient than Kamal, he can complete the work in________days.
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A completes 80% of a work in 20 days. Then B also joins and A and B together finish the remaining work in 3 days. How long does it need for B if he alone completes the work?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  12 buckets of water fill a tank when the capacity of each bucket is 13.5 litres. How many buckets will be needed to fill the same tank, if the capacity of each bucket is 9 litres?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A leak in the lower portion of a tank can empty the full tank in 9 hrs. An inlet pipe fills water at the rtae of 10 lit. a minute. When the tank is full, the inlet is opened and due to leak, the tank is empty in 16 hrs. How many litres does the cistern hold ?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A can do (1/3) of a work in 5 days and B can do (2/5) of the work in 10 days. In how many days both A and B together can do the work ?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A alone can finish a work in X days. B alone can finish the same work in X+5 days. Together, they take 6 days to complete the work. Find X
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  Running at the same constant rate, 6 identical machines can produce a total of 270 bottles per minute. At this rate, how many bottles could 10 such machines produce in 4 minutes?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  P and Q need 8 days to complete a work. Q and R need 12 days to complete the same work. But P, Q and R together can finish it in 6 days. How many days will be needed if P and R together do it?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  10 men can complete a work in 7 days. But 10 women need 14 days to complete the same work. How many days will 5 men and 10 women need to complete the work?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  P can do a work in the same time in which Q and R together can do it. If P and Q work together, the work can be completed in 10 days. R alone needs 50 days to complete the same work. then Q alone can do it in__________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A leak in the bottom of a tank can empty the full tank in 6 hrs. An inlet pipe fills water at the rate of 4 lit. a minute. When the tank is full, the inlet is opened and due to the leak, the tank is empty in 8 hrs. The capacity of the tank in liters is_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A tap can fill a tank in 32 min. and another can empty it in 16 min. If the tank is already half full and both the tanks are opened together, the tank will be_________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  A and B can do a piece of work in 12 days; B and C in 15 days; C and A in 20 days. A alone can do the work in__________?
Category: Mathematics Quizzes,   Published by: T-Code Scripts
MCQs:  Twelve men can do a work in twenty days while twenty women can finish the same work in sixteen days. Find the ratio between the capacity of a man and a woman.
Category: Mathematics Quizzes,   Published by: T-Code Scripts