Question 1002621

Pens are {{{10p}}}=£{{{0.10}}} more than pencils.
Assuming a pencil is {{{t}}}, we have that pen cost {{{t+0.10}}}

then, if {{{6}}} pens and {{{4}}} pencils cost £{{{2.10}}}, we have

{{{6(t+0.10)+4t=2.10}}}.....an equation to show this information

now you can  solve for {{{t}}} and find out what is the price of each item

{{{6t+0.60+4t=2.10}}}

{{{10t=2.10-0.60}}}

{{{10t=1.50}}}

{{{t=1.50/10}}}

{{{t=0.15}}}......one pencil cost £{{{0.15}}}

then  pen cost £{{{t+0.10=0.15+0.10=0.25}}}

check:{{{6}}} pens and {{{4}}} pencils cost £{{{2.10}}}

£{{{6*0.25+4*0.15=2.10}}}

£{{{1.50+0.60=2.10}}}

£{{{2.10=2.10}}}