10 men, working 6 hours a day can complete a work in 18 days. How many hours a d

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Question
10 men, working 6 hours a day can complete a work in 18 days. How many hours a day must 15 men work to complete the work in 12 days ?
Options
A. 4 hours a day
B. 5 hours a day
C. 6 hours a day
D. 7 hours a day

Correct Answer

6 hours a day

Explanation

More Men, Less Hours {Indirect Proportion}

Less Days, More Hours {Indirect Proportion}

$\begin{array}{r} \begin{matrix} m e n & 15 : 10 \end{matrix} \\ \begin{matrix} d a y s & 12 : 18 \end{matrix} \end{array}\} ? ? 6 : x$

=> 15 * 12 * x = 10 * 18 * 6

=>x = 6

Chain Rule problems

Search Results

1. In a camp, there is a meal for 120 men or 200 children. If 150 children have taken the meal, how many men will be catered to with remaining meal?
Options
A. 50
B. 40
C. 30
D. 20

2. 4 mat-weavers can weave 4 mats in 4 days. At the same rate, how many mats would be woven by 8 mat-weavers in 8 days?
Options
A. 16
B. 12
C. 8
D. 4

3. In a dairy farm, 40 cows eat 40 bags of husk in 40 days. In how many days one cow will eat one bag of husk?
Options
A. 1
B. 1/40
C. 40
D. 80

4. If a quarter Kg of potato costs 60 paise, How many paise will 200 gm cost?
Options
A. 48 Paise
B. 54 Paise
C. 56 Paise
D. 72 Paise

5. If the cost of x metres of wire is d rupees, then what is the cost of y metres of wire at the same rate?
Options
A. Rs. (xy/d)
B. Rs. (xd)
C. Rs. (yd)
D. Rs. (yd/x)

6. If 16 men working 7 hours day can plough a fieid in 4l days, inhow many days will 14 men working 12 hours a clay plough the samefield ?
Options
A. 46
B. 32
C. 35
D. 30

7. If the Price of 6 toys is Rs. 264.37, What will be the approximate price of 5 toys?
Options
A. Rs.120
B. Rs.100
C. Rs.200
D. Rs.220

8. An industrial loom weaves 1.14 meters of cloth every second. Approximately, how much time will it take to weave 52 meters of cloth ?
Options
A. 29.32 sec
B. 42.51 sec
C. 39.25 sec
D. 45.61 sec

9. An industrial loom weaves 0.128 metres of cloth every second. Approximately, how many seconds will it take for the loom to weave 25 metre of cloth ?
Options
A. 194 seconds
B. 195 seconds
C. 196 seconds
D. 197seconds

10. 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?
Options
A. 648
B. 1800
C. 2700
D. 10800

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