Question 181319
let  a and b be the number of bananas sam and sandra have respectively
:
a=2b......eq 1
a+b=36....eq 2
:
take a's value from eq 1 and plug it into eq 2
:
2b+b=36
:
3b=36
:
{{{highlight(b=12)}}}number of bananas Sandra has
:
{{{highlight(a=2(12)=24)}}}number of bananas Sam has