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Activity 3- Finding the base (B). Write the formula then solve. 1. Twenty percent of what number is 75? D = A 2. Four hundred fifty is 75% of what number? 31=9 3. Ninety percent of a number is 729, what is the base? Jeriw to (20​

Sagot :

Answer:

1. 375

2. 600

3. 810

Step-by-step explanation:

1. 20 of n = 75

⅕ n = 75

n = 375

2. 75% of n = 450

75/100 n = 450

n = 4500 ÷ 75

n = 600

3. 90% of n = 729

n = 72900 ÷ 90

n = 810

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