A few days ago
Arvelyn A

translating statements into equations?

1. Mark’s age now if he is seven-ninths of what will be 18 years from now.

2. The total number of coins is 36 and there are twice as many 10cents coins as 25cents coins.

3. A part of Php8,900 is invested at 6% and the remainder at 4%. The annual income from 4% investment exceeds the income from the 6% investment by Php 74. Represent the amount of each investment.

5. The amount of water to be added to 200 liters of 85% pure denatured alcohol to dilute it into 65% alcohol content.

6. The average speed of an airplane which covered a distance of 900m in 6 minutes.

help please………….. or give examples…………..

Top 2 Answers
A few days ago
John V

Favorite Answer

1) x = 7/9(x+18), x= age now

2) .1(x) + .25(36 – 2x), x = # of 10c coins

3) .04x = 74 + .06(8900 – x), x = 4% investment; [8900 -x] = 6% investment

4) .65(200 + x) = .85 * 200, x = amt of water to be added

5) 900/.1 = m/hr = speed

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A few days ago
Anonymous
2. let’s name “x” the number of 25cent coins. Then the number of the 10cent will be 2x. So we have 2x+x=36
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