Let p be the prize of a pen and m the prize of a mechanical pencils. If you buy six pens and one mechanical pencil, you spend 6p+m. We know that this equals 9, because you get 1$ change from a 10$ bill.
Similarly, if you buy four pens and two mechanical pencils, you spend 4p+2m, which is 8$, because now you get a $2 change. Put these equation together in a system:
Now, if you multiply the first equation by 2, the system becomes
Subtract the second equation from the first:
Plug this value into the first equation to get
15% x
100 1.15 X is your variable, your unknown number and 15% has to always be over 100 , Then you have to cross multiply and divide 100 because that is the only number basically you have to just multiply across and divide 100 to make it to the nearest cent you have to round the last two numbers after the decimal Representing money.. Hope this helps!!
THe rider and the motorcycle mass togther will be 326.
237+89=326
To get equivalent decimals you times the decimal by a number for example 2
9.1x2= 18.2
or times it by 3
9.1x3= 27.3
the answers are 18.2 and 27.3 and obviously other ones to...
i hope this helped :)
4,500 mass. if you multiply 0.45 and 10,000 you'll get 4,500
