tim has some marbles,sue has twice as many marbles as tim,jim has 15 marbles, All together they have 63 marbles.How many marbles does tim have

Question

tim has some marbles,sue has twice as many marbles as tim,jim has 15 marbles, All together they have 63 marbles.How many marbles does tim have.

Answer 1

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