Respuesta :
Answer:
- 96
- 6.9
- 25%
- 8%
- 79
- 33.8
Step-by-step explanation:
Here is the complete question: Find each number. Round to the nearest tenth if necessary.
- 80% of 120.
- 115% of 6
- What percent of 128 is 32?
- 3 is what percent of 36?
- 23.7 is 30% of what number?
- 71/2% of what is 12?
1) 80% of 120
= [tex]\frac{80}{100} \times 120= 8\times 12[/tex]
= 96
∴ 80% of 120= 96
2) [tex]115\%\ of\ 6[/tex]
=[tex]\frac{115}{100}\times 6= 1.15\times 6[/tex]
∴ [tex]115\%\ of\ 6[/tex] = 6.9
3) What percent of 128 is 32?
= [tex]\frac{32}{128} \times 100[/tex]
= [tex]25\%[/tex]
4) 3 is what percent of 36?
= [tex]\frac{3}{36} \times 100[/tex]
= [tex]8\%[/tex]
5) 23.7 is 30% of what number?
Let the number be "x".
⇒ [tex]\frac{30}{100} \times x= 23.7[/tex]
Cross multiplying
⇒ [tex]x= \frac{23.7\times 100}{30}[/tex]
∴ x= 79.
6) 71/2% of what is 12?
Lets assume the required number be "x".
⇒ [tex]\frac{71}{2} \times 100\times x= 12[/tex]
cross multiplying both side.
⇒x= 33.8
∴ 71/2% of 33.8 is 12
