99. If 24 men eat dinner in 1 hour and 20 women
eat dinner in 45 minutes; then in how much time
12 men and 10 women together shall eat dinner
A. 12 hours
B. 19 hours 30 minutes
C. 1 hour
D. 45 minutes
Answers
Answer:
H dies e in eeee skis e keni e on ise beenu e on behi
12 men and 10 women together shall eat dinner in 1 hour(Option C)
Given:
24 men eat dinner in 1 hour and 20 women eat dinner in 45 minutes.
To Find:
How much time 12 men and 10 women together shall eat dinner
Solution:
24 men can eat in 80 minutes
⇒ 1 man can eat in 24 × 80 = 1920 minutes
⇒ 12 men can eat in 1920/12 = 160 minutes
⇒ 12 men can eat 1/160 of work in 1 day
20 women can eat in 45 minutes
⇒ 1 woman can eat in 20 × 45 = 900 minutes
⇒ 10 women can eat in 900/10 = 90 minutes
⇒ 10 women can eat 1/90 in 1 day
12 men and 10 women can eat in 1/160 + 1/90 minutes.
12 men and 10 women can eat in (9 + 16)/1440 minutes.
12 men and 10 women can eat in (25)/1440 minutes.
12 men and 10 women can eat in 60 minutes which is equal to 1 hour.
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