Question

Yuvi need some supplies for his business. He ordered items for a year worth 999.02$ according to the following table.

Supply	Total number Needed	Cost Each
Textbook	$1$	24.99$
Notebooks	$5$	3.78$
Pencils	$20$	0.55$

Halfway through the year, he has used 713.57$ worth of the supplies. How many pencils should be left?

Answer 1

Total spent $=$999.02$

Spent on 1 supply $=24.99=$24.99$

$3.78\times 5=$18.9$

$\underset{–}{0.55\times 20=\$11}$54.89$

No. of times he can get the supply in $=$999.02$

Is $\frac{\$999.02}{\$54.89}=18.200\approx 18.$

Already used stuff worth $=$713.57$

i.e. $\frac{\$713.57}{\$54.89}=$ 13 supplies used out of 18 supplies

Remaining supplies $=18-13=5$ supplies

in each supply $20$ pens

in 5 supply $20\times 5=100$ pens are left