Question

# Manju, who works at Ganesh Fruit juice center, prepares 51 glasses of milkshake in 4 min, 18 sec in his first shift. After having a sandwich, he prepares 73 glasses in 7 min 13 sec. After another sandwich, he prepares 112 glasses in 12 min, 24 sec. The container in which the milkshake is prepared contains a maximum of 9 glasses of a drink at a time. Find his approximate average time of preparation of one container of the drink, if he starts with a fresh container each time.

A
48s
B
50s
C
40s
D
51s
E
43s

Solution

## The correct option is D 51sOption (d). In the first shift, he uses the container 6 times. (45 glasses in 5 rounds and the remaining 6 glasses in the 6th round. Similarly, he prepared 73 glasses in 9 rounds, and 112 glasses in 13 rounds. Hence, the required average = total time/ total number of rounds =       4 min 18 s + 7 min 13 s + 12 min 24 s       =      23 min+55s = 51 seconds(rounded)                                                                                      6+9+13 = 28

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