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Arithmetical Reasoning Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to Arithmetical Reasoning. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Q 1 - A man has 20 cows all but 8 died in accident. How many left?
Options :
Answer : A
Explanation
”All but 8 died” means except 8 all died . So, option a is correct.
Q 2 - Suresh has some grapes when he bought it from a local market near Bhubaneswar. First bunch of grapes has (1/4) as many grapes as the second bunch. If the second bunch has 3 grapes less than the first bunch, then the number of grapes in the first bunch are
Options :
Answer : A
Explanation
Let the number of grapes in the second bunch be a. Then, the number of grapes in the first bunch
= a + (1/4) * a
= (5/4) * a
So,
(5/4) * a - a = 3
5a – 4a = 12
a = 12.
Q 3 - In between two file ends in the rack are six paper weights. If you decide to arrange the six paper weights in every possible combination and moved just one paper weight every minute, how long would it take to you?
Options :
Answer : A
Explanation
Clearly, we can get the answer by taking the factorial.
= 6! = 6 × 5 × 4 × 3 × 2 × 1 = 720.
So total time taken = 720 minutes = 12 hours.
Q 4 - A can do ¼ of a work in 10 days, B can do 40% of work in 40 days and C can do 1/3 of work in 13 days. Who will complete the work first?
Options :
Answer : C
Explanation
Whole work will be done by A in 10 × 4 = 40 days. Whole work will be done by B in (40 × 100/40) = 100 days. Whole work will be done by C in (13 × 3) = 39 days. Therefore, C will complete the work first.
Q 5 - Suresh’s father on his birthday told Suresh that he was of his present age when Suresh was born. If Suresh’s father is 36 now, then how old was Suresh five years ago?
Options :
Answer : B
Explanation
Let Suresh’s father’s age be x and Suresh’s age be y.
Then, x – y = y or x = 2y
Now, x = 36. So, 2y = 36 or y = 18.
Therefore Suresh’s present age = 18 years. So, Suresh’s age 5 years ago = 13 years.
Q 6 - 16 men and 20 boys can do a piece of work in 30 days. In how many days, 15 men and 15 boys will take to finish the work?
Options :
Answer : A
Explanation
16 men = 20 boys
1 man = 5/4 boys
15 men = 75/4 boys
Total no of boys = 75/4 + 15 = 135/4
20 boys = 30 days
135/4 boys = 30 × 20 × 4 /135 = 17 7/9 days
Q 7 - When Raghav Swain was born, his father Harivansh Swain was 32 years older than his brother Ranjit and his mother Urmila was 25 years older than his sister Sharmistha. If Ranjit is 6 years older than Rahul and Mrs Urmila Swain is 3 years younger than Mr. Harivansh, how old was Sharmistha when Rahul was born?
Options :
Answer : A
Explanation
When Rahul was born,
his brother Ranjit’s age = 6 years,
his father Harivansh’s age = ( 6 + 32 ) = 38 years.
His mother Urmila’s age = ( 38 - 3) years = 35 years.
His sister Sharmistha’s age = ( 35 - 25 ) years = 10 years.
Hence, option A.
Q 8 - P is able to complete a certain task in 6 days and Q can do it within 8 days. P and Q agreed to do the task together for Rs. 4000. R joined them and they finished the task within 3 days. How much is to be paid to R?
Options :
Answer : D
Explanation
$Work \: done \: by \: R \: in \: one \: day \: = \: \frac{1}{3} - \lgroup\frac{1}{6} + \frac{1}{8}\rgroup = \frac{1}{3} - \frac{7}{24} = \frac{1}{24}$
$P's share \: : \: Q's share \: : \: R's Share \: = \: \frac{1}{6} : \frac{1}{8} : \frac{1}{24} = 4 \: : \: 3 \: : \: 1$
$\therefore \: R's \: share \: for \: 3 \: days \:= \: Rs.\lgroup3*\frac{1}{24}*4000\rgroup \: = \: Rs.500.$
Q 9 - An auto can pick 5 people at a time. A minibus can pick 20 people at a time. One day 7 buses came one after another. How many autos are required to take the people away from the spot?
Options :
Answer : C
Explanation
In 7 buses people came will be 20 × 7 = 140. To pick 140 people autos required will be 140/5 = 28.
Q 10 - Mr. Das told his son Rinku in a special occasion that, he was of Rinku’s current age when Rinku was born. If Mr Das is 36 now, how old was Rinku five years back?
Options :
Answer : B
Explanation
Let Rinku’s father’s age be x and the Rinku’s age be y.
Then, x – y = y or x = 2y
Now, x = 36. So, 2y = 36 or y = 18.Therefore Rinku’s present age = 18 years. So, Rinku’’s age 5 years ago = 13 years.
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