WEEKLY TEST NO 2.2

Identify whether the following problems are looking for the percentage, rate, or base. Write P for percentage , R for rate and B for base. Then solve for the unknown.

Hint: after the word "of" is always the BASE. RATE is always expressed in % symbol.

1. 85% of P78.00 is what amount ?

2. 7 is 35% of what number?

Question

Answered

Sagot :

Mamalintasarah43go Mamalintasarah43go · Answer 1

Calculate the percentage of a number.

1.80% of 78 = 62.4

Calculator 2: Calculate a percentage based on 2 numbers.

For example: 62.4/78 = 80%

How much is 80% of 78? What is 80% of 78 and other numbers?

80% of 78.00 = 62.4000

2.We already have our first value 7 and the second value 35. Let's assume the unknown value is Y which answer we will find out.

As we have all the required values we need, Now we can put them in a simple mathematical formula as below:

STEP 17 = 35% × Y

STEP 27 =

35

100

× Y

Multiplying both sides by 100 and dividing both sides of the equation by 35 we will arrive at:

STEP 3Y = 7 ×

100

35

STEP 4Y = 7 × 100 ÷ 35

STEP 5Y = 20

Finally, we have found the value of Y which is 20 and that is our answer.