[tex]\large\bf{\underline{Given :}}[/tex]
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[tex]\large\bf{\underline{To\:find :}}[/tex]
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[tex]\large\bf{\underline{Cost\:of\:11\:shirts }}[/tex]
[tex] = 11 \times 15.65[/tex]
[tex] = 172.15[/tex]
[tex]\large\bf{\underline{Therefore}}[/tex]
[tex]⟹11 \: shirts \: + \: 24 \: ties \: = 403.51[/tex]
[tex]⟹172 + 24 \: ties = 403.51[/tex]
[tex]⟹24 \: ties = 403.51 - 172.15[/tex]
[tex]⟹24 \: ties = 231.36[/tex]
[tex]⟹1 \: tie \: = \frac{231.36}{24} [/tex]
[tex]⟹1 \: tie = 9.64[/tex]
[tex]\large\bf{\underline{Hence\:cost\:of\:a\:tie}}[/tex]
[tex]\huge\bf{= £9.64}[/tex]
