Answer:
$17.2
Step-by-step explanation:
The ratio of money in Brian's wallet to Colin's wallet is;
[tex]B:C=7:2[/tex]
[tex]\implies \frac{B}{C}=\frac{7}{2}[/tex]
[tex]\implies B=\frac{7C}{2}[/tex] .....(1)
If Brian spent $39, then he now
has: $(B-39)
This amount compared to Collin's money is
$(B-39)=C+4
B=C+4+39
B=C+43.....(2)
Put equation (1) in (2)
[tex]\frac{7C}{2}=C+43[/tex]
[tex]7C=2C+86[/tex]
[tex]7C-2C=86[/tex]
[tex]5C=86[/tex]
[tex]C=17.2[/tex]
Collins initially had $17.2
Answer:
£14
Step-by-step explanation:
hegartymaths gave this answer.
