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Byju's Answer
Standard VI
Mathematics
Direct Variation
60 packets wi...
Question
60 packets with 8 pencils each cost rs.800. find the cost of 75 packets of 10 pencils each.
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Solution
Cost of
60
packets of
8
pencils
=
R
s
.
800
Cost of
1
packet of
8
pencils
=
800
60
=
R
s
.
80
6
Now,
Cost of
8
pencils
=
R
s
.
80
6
Cos of
10
pencil
=
80
6
×
8
×
10
=
R
s
.
50
3
Now,
Cost of
1
packet of
10
pencils
=
R
s
.
50
3
Cost of
75
packets of
10
pencils
=
R
s
.
50
3
×
75
=
R
s
.
1250
Hence the cost of
75
packets of
10
pencils each is
R
s
.
1250
.
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