# At first tourists 84 kilometers floated 2 hours 20 minutes by motor ship on the lake, and then 89.6 kilometers down the river against the current and came back the same route. Find, the travel there and back what is the time continued if the speed of a watercourse 2.4 kmchas.

Yanuariy

350

Answer: 9 hours 40 minut2 the h 20 min. =2 1/3 h 1) 84:2 1/3=36 (km/h) - the speed of ship 2) 89.6: (36-2.4) =2 2/3(ch) - 3 went against the stream) 89.6: (36+2.4) =2 1/3(ch) - on a current 4) 2 2/3+2 1/3+2*2 1/3=9 2/3 h =9 h 40 min. - vputa time

66

Answer add
emiliya

### Other questions in the section - maths

Kahelm

In the first day rabochichy paved 60 km ways, the во2nd y is 27

2020-10-18 04:24:39

Pimen

Length of square site 74m, width of 28 m na1/4chast to a posadiliredk, on

2020-10-18 04:24:39

Nador

In shop several books of a damok his friends. Their stoymost makes 229,500 tenges.

2020-10-18 04:24:39

Arelseifyn

In an ex. of only 80 words. sushch. 1/4, verbs 3/10. other other parts

2020-10-18 04:24:39

Hmetevskiy

Roma performed homeworks of 3 h from them to the mathematician 15/12 and the

2020-10-18 04:24:39