Answer:Step 1: We make the assumption that 1000 is 100% since it is our output value.Step 2: We next represent the value we seek with $x$.Step 3: From step 1, it follows that $100\%=1000$.Step 4: In the same vein, $x\%=800$.Step 5: This gives us a pair of simple equations:$100\%=1000(1)$.$x\%=800(2)$.Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS(left hand side) of both equations have the same unit (%); we have$\frac{100\%}{x\%}=\frac{1000}{800}$Step 7: Taking the inverse (or reciprocal) of both sides yields$\frac{x\%}{100\%}=\frac{800}{1000}$$\Rightarrow x=80\%$Therefore, $800$ is $80\%$ of $1000$.1000 is what percent of 800 125 %Solution for 1000 is what percent of 800:1000:800*100 =(1000*100):800 =100000:800 = 125Now we have: 1000 is what percent of 800 = 125Question: 1000 is what percent of 800?Percentage solution with steps:Step 1: We make the assumption that 800 is 100% since it is our output value.Step 2: We next represent the value we seek with $x$.Step 3: From step 1, it follows that $100\%=800$.Step 4: In the same vein, $x\%=1000$.Step 5: This gives us a pair of simple equations: 125Step-by-step explanation: