Explain how you could write 35% as the sum of two benchmark percents or as a multiple of a percent.

Step-by-step explanation:

We don't know what you consider to be "benchmark percents", but I would choose 25% = 1/4 and 10% = 1/10 to be put into that category, simply because they are easily calculated.

Just as 35 = 25 + 10, so 35% = 25% + 10%.

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Factors of 35 are 1, 5, 7, 35

So, 35% = 1% × 35

... = 5% × 7

... = 7% × 5

... = 35% × 1

5% = 1/20 is another percentage that could be considered a "benchmark percent", so my choice for a multiple that is 35% is 5% × 7.