The Correct answers are
A. 1.3
E. -1
F. -4
This one is deceiving my simple. Start with the ratio 2/3. To find more ratios that are proportionate, simply multiply the numerator and denominator by the same number. Let's go with 2. So, 2*2/2*3 (which is 4/6) should be equal to 2/3. If you plug both into a calculator, you will see that they both equal 0.667, and are therefore proportionate.
Here are some more examples:
2/3, 4/6, 6/9, 8/12, 10/15
1 1/2 oz to each gallon.
Total required for 3 4/5 gal is the product of 1 1/2 and 3 4/5, which is approximately 4*1 1/2 = 6 oz.
Exact answer
1 1/2 * 3 4/5
=3/2 * 19/5
=57/10
=5.7 oz
3/2,000
= 3/2,000*100% (100%= 100/100= 1, so it does not change the outcome).
= 0.15%
The final answer is 0.15%~
