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40 POINTS + BRAINLIEST AND THANKS !!!!!!!!!!!!!

PLEASE HELP ME WITH THIS !!!!!!

5. If 30 meters of cloth can be bought for Rs. 810, how many meters of cloth can be bought for

Rs. 1215?

6. A car can reach a certain place in 12 hours at the speed of 60 km/hr. by how much should the

speed be increased so that it completes the journey in 10 hours?

7. 40 persons take 30 days to complete a work. How long will it take to complete the work, if 20 more persons join them?

8. A fort has enough food for 800 soldiers for 25 days. If a reinforcement of 200 soldiers joins them now, how long will the food last?

9. In a library, 126 copies of a certain book require a shelf length of 3.78 m. how many copies of the same book would occupy shelf length of 4.8 m?

10. Karan cycles at a speed of 40 km/ hr and reaches school in 12 minutes. How long will Kunal take to reach school if he cycles at 30 km/hr?

Respuesta :

Answer:

5)  RS.810 - 30m

Rs.1 - 30/810m

Rs.1215 - 30/810*1215

              =45m

6)

12*60=720km

720/10=72km/hr

8)

800 soldiers- 25 days

soldierdays=800*25

                  =20000

no of days food last = 20000/1000

                                 =20 days

9)126*3.78=476.28m

no of copies in new shelf = 476.28/4.8= approx 99 books

10)40*12/60=8km

kunal will reach school in = 8/30*60=16min

   

Step-by-step explanation:

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