Why not work it in your head? Your 8.50 is 8 and one half. The 8 1/2 is 8 + 1/2 and the 40 is 4 x 10. You have the sum of two numbers times another number: (8 + 1/2) times 40 To work this, you multiply 8 times 40 and add it to 1/2 times 40. 8 x 40 can be worked by breaking the 40 down like this: 8 x (4 x 10) = 8 x 4 x 10 = 32 x 10 = 320 You're half way done, and now you have the easy half left. 1/2 x 40 = 20 Now add like this (8 + 1/2) times 40 = 320 + 20 = 340
340 is 40% of 850, so 850 minus 340 = 510. If 10% = $85 then 40% = $85 x 4. Take this amount from your total and you have you answer.
850 x 0.5 = 425
850 x 4 = 3400
5100
To find two numbers that multiply to 850, we need to factorize 850 into its prime factors. 850 can be expressed as 2 x 5^2 x 17. Therefore, the two numbers that multiply to 850 are 2 x 5 x 5 x 17, which simplifies to 10 x 85. So, the two numbers that multiply to 850 are 10 and 85.
340 is 40% of 850, so 850 minus 340 = 510. If 10% = $85 then 40% = $85 x 4. Take this amount from your total and you have you answer.
850 - 40 = 810
To find the percentage, divide 340 by 850 and then multiply by 100. So, (340 / 850) * 100 = 40%.
850 - 10% = 850 x (1 - (10/100)) = 850 x 0.9 = 765
If: 850 = 0.30x Then: x = 850/0.30 = 2833.333 ... recurring
80% of 850 = 0.8 x 850 = 680
2 x 5 x 5 x 17 = 850
2 x 5 x 5 x 17 = 850
850 x 0.5 = 425
2 x 5 x 5 x 17 = 850
850 x 4 = 3400
850 x 1767 = 1501950