Page 6 - Digi Notes : Maths - 11.03.2016
P. 6
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2. There are 65 students in a class. 39 rupees are distributed
among them so that each boy gets 80 paisa and each girl
gets 30 paisa. Find the number of boys in that class.
Paise /Students 3900 Paise 60P / students
65
Girl Boys
30 80
60
20 : 30
G : B 3 : 2
Girls 65 2 26 And Boys 65 3 39
5 5
3. A person travels 285 km in 6 hrs. In two stages. In the
first part of the journey, he travels by bus at the speed of
40 km per hr. In the second part of the journey, he travels
by train at the speed of 55 km per hr. How much distance
did he travel by train?
AverageSpe ed 285 47 5 . km/ hr
6
Bus Train
40 55
47 5 .
5 . 7 : 5 . 7
Bus Time : Train Time 5 . 7 : 5 . 7 ; 1 : 1
Train Time 6 1 3 hrs.
2
Hence Distan ce Travelled by Train 55 3 165 km
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2. There are 65 students in a class. 39 rupees are distributed
among them so that each boy gets 80 paisa and each girl
gets 30 paisa. Find the number of boys in that class.
Paise /Students 3900 Paise 60P / students
65
Girl Boys
30 80
60
20 : 30
G : B 3 : 2
Girls 65 2 26 And Boys 65 3 39
5 5
3. A person travels 285 km in 6 hrs. In two stages. In the
first part of the journey, he travels by bus at the speed of
40 km per hr. In the second part of the journey, he travels
by train at the speed of 55 km per hr. How much distance
did he travel by train?
AverageSpe ed 285 47 5 . km/ hr
6
Bus Train
40 55
47 5 .
5 . 7 : 5 . 7
Bus Time : Train Time 5 . 7 : 5 . 7 ; 1 : 1
Train Time 6 1 3 hrs.
2
Hence Distan ce Travelled by Train 55 3 165 km
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