You subtract 7% from 32=29.76
Then you subtract 8% from 29.76=27.379
Answer:
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Let us consider , there are 30 boys and 40 girls in a school. So, the ratio of number of boys to number of girls =
and read as 3 is to 4. We can say , the ratio compares two of more quantities of same unit. Until two quantities have same units , it is meaningless to compare by ratio. So, to find the ratio of two quantities , it is necessary to express them in same unit or of same kind. Since , they are in division form. So ,ratio is unit less quantity. Thus , the ratio is a comparison of two quantities of the same kind in division which doesn't have any units. For example :
is a ratio and is read as ' a is to b ' in which ' a : is antecedent and ' b ' is called consequent.
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£ 21 is to be divided between Amy and Ben in the ratio 5 : 2. So, let Amy get £ 5x and Ben get £ 2x.
Then , According to the question , 
Solve for x :
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The value of x is 3. Now , substitute the value of x in 5x :
Amy received £ 5x = 5 × 3 = £ 15 .
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Hope I helped ! ツ
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Total distance covered is equal to ~
- Number of revolutions × circumference
Hence distance covered = 2200 m = 2.2 km
Plug y= -3x in 2x-3y= 22, we have:
2x -3(-3x)= 22
⇒ 2x+ 9x= 22
⇒ 11x= 22
⇒ x= 22/11
⇒ x= 2
y= -3x= -3*2= -6
Final answer: x=2, y=-6~