Related Questions

A bakery opened yesterday with its daily supply of 40 dozen rolls. Half of the rolls were sold by noon, and 80% of the remaining rolls were sold between noon and closing time. How many dozen rolls had been sold when the bakery closed yesterday?
A 2 dozen
B 4 dozen
C 5 dozen
D 8 dozen
In a four high rolling mill, there are four rolls out of which
A One is working roll and three are backing up rolls
B Two are working rolls and two are backing up rolls
C Three are working rolls and one is backing up roll
D All of the four are working rolls
A three high rolling mill consists of three rolls placed one above the other. Which of the following statement is correct?
A The upper and middle rolls rotate in the same direction whereas the bottom roll rotates in opposite direction
B The upper and bottom rolls rotate in the same direction whereas the middle roll rotates in opposite direction
C The bottom and middle roll rotate in the same direction
D Any one of the above
A two high rolling mill consists of two rolls which rotate
A At the same speed and in the same direction
B At the same speed but in opposite direction
C At different speeds and in the same direction
D At different speeds and in the opposite direction
In a ball mill, the volume occupied by the balls (when the mill is stopped) is about __________ percent of the volume of the mill.
A 35
B 50
C 70
D 85
Two men and women are entrusted with a task. The second man needs three hours more to cope up with the job than the second man and the woman would need working together. The first man, working alone, would need as much time as second man and the woman working together. The first man working alone, would spend eight hours less than the double period of the time second man would spend working alone. How much time would the two men and the women need to complete the task if they all asked together?
A 1 hour
B 2 hours
C 3 hours
D 4 hours
E 5 hours
The cost of four rolls, six samuchas and three loaves of bread is Tk. 91. The cost of two rolls, three samuchas and one loaf of bread is Tk. 39. What is the cost of one loaf of bread?
A Tk. 10.50
B Tk. 11.00
C Tk. 12.00
D Tk. 13.00
Power required to drive a ball mill with a particular ball load is proportional to (where, D = diameter of ball mill )
A D
B $$\frac{1}{{\text{D}}}$$
C D2.5
D $$\frac{1}{{{{\text{D}}^{2.5}}}}$$
Mr. Mamun bought 73 rolls of film. He can take 24 pictures with each roll of film. What is the total number of pictures he can take with 73 rolls of film ?
A 1,642
B 1,652
C 1,742
D 1,752
A case of 12 rolls of paper towels sells for $ 9. The cost of one roll sold individually is $ 1. what is the percent of savings per per roll for the 12-roll package over the cost of 12 rolls purchased individually?
A 25%
B 90%
C 15%
D 11%

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