Ashifur August 8, 2023 - 13:15
Problem: 2 men and 3 boys can do a piece of work in 10 days while 3 men and 2 boys can do the same work in 8 days. In how many days can 2 men and 1 boy do the work?

View all: JANOTA BANK TELLER (AEO) | WRITTEN QUESTION (MATH) SOLVE | 2015

Correct Answer: 12.5 days.

Explanation:

(2 men + 3 boys)’s 10 days work = (3 men + 2 boys)’s 8 days works

.=> (20 men + 30 boys)’s 1 day work = (24 men + 16 boys)’s 1 day work.

=> 4 men = 14 boys

=> 1 men = $\frac{14}{4}$ boys

=> 2 men = $\frac{14}{4}$ X 2 boys = 7 boys.

2 men + 3 boys = 7 boys + 3 boys = 10 boys

and 2 men +1 boy= 7 boys + 1 boy = 8 boys

10 boys can do the work in = 10 days

8 boys can do the work in = $\frac{10\times 10}{8} = 2\frac{1}{2}$ Or, 12.5 days.

Write Reply...
You should read | Topics/Questions
A shirt was sold for Tk. 171 and the gain was as much percent as it costs in Take amount. What was the purchase price of the shirt?
In an organization, 30% of the employees live over ten miles from work and 60% of the employees who live over ten miles from work use company transport. If 40% of the employees of the company use company transport, what percent of the employees live ten miles or less from work and use company transport?
একটি আয়তাকার ক্ষেত্রের ক্ষেত্রফল ১০ একর এবং তার দৈর্ঘ্য প্রহ্থের ৪ গুণ। ক্ষেত্রটির দৈর্ঘ্য কত মিটার?
The price of the front stall ticket is$\frac{1}{3}$inf the price of a rear stall ticket. When all the tickets are sold. the total receipts from the 600 rear stall and 450 front stall seats are Th. 45000.What is the price of each kind ticket?
ক ও খ এর মাসিক আয়ের গড় ৩০০ টাকা, থ ও গ এর মাসিক আয়ের গড় ৩৫০ টাকা এবং ক ও গ এর মাসিক আয়ের গড় ৩২৫ টাকা । ক এর মাসিক আয় কত?
$\frac{2}{x-2}+\frac{3}{x+3}=1$
x+7=7 এবং xy=10 হলে, $x^{2}+y^{2}$এর মান কত?
If $\frac{a}{q-r}=\frac{b}{r-p}=\frac{c}{p-q}$ then show that, a+b+c = pa+qb+rc
A boat sailing against the current takes 8 hours to travel 32km. While sailing with the current, It takes only 4 hours to travel the same distance. What is the speed of boat? What is the speed of the current?
70 students are studying physics, mathematics and chemistry. 40 students study mathematics. 35 study physics and 30 study chemistry, 15 students are studying all the subjects. How many students are studying exactly two of the subjects?
User Avatar

Articles

0

Comments

0

Rating

0

Login