425,449 views
13 votes
13 votes
Tim has some marbles.

Sue has twice as many marbles as Tim
Jim has 15 marbles
Tim, Sue and Jim have a total of 63 marbles
How many marbles does Tim have?

User Kissy
by
3.2k points

2 Answers

20 votes
20 votes
2t=s
J=15
T+s+j= 63
63-15=48
T+s=48
T = 16
S= 32

Tim has 16 marbles

User Rslite
by
3.0k points
11 votes
11 votes

Answer:

Let x = the number of marbles Tim has

Let 2x = the number of marbles Sue has

x + 2x + 15 = 63

3x = 48

x = 16 marbles

Explanation:

User Methodsignature
by
3.7k points