rosetoheart2
10.10.2019 •
Mathematics
David and joseph have a total of 328 marbles matthew and david have 176 marbles joseph has five times as many marbles does matthew how many marbles does david have?
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Ответ:
David has X marbles
Matthew has Y marbles
Joseph has 5 times of Matthew so , 5Y marbles
Here,
X+5y=328 (1)
X+Y=176 (2)
From (1)-(2),
4Y=152
or,Y=38
By putting Y=38 in(2),
X+38=176
or,X=138
So David has 138
Matthew has 38
and Joseph has 5*38=190 marbles
Ответ: