Question

1.calculati 17% din:
a)2400
b)52400
c)12300
d)7100
2.Determinati fractia $\frac{a}{b}$,stiind ca fractia este egala cu $\frac{ 2}{3 }$ si ca a+b=10

Answer 1

a)[tex] \frac{17}{100} x2400= \frac{17x2400}{100} = \frac{40800}{100} =408 [/tex]
b)$\frac{17}{100} x52400= \frac{17x52400}{100} = \frac{890800}{100} =8908$
c)$\frac{17}{100} x12300= \frac{17x12300}{100} = \frac{209100}{100} =2091$
d)$\frac{17}{100} x7100= \frac{120700}{100} =1207$
2)$\frac{a}{b} = \frac{2}{3}$
a=2K
b=3K
a+b=10
2K+3K=10
5K=10
K=10:5
K=2
a=2x2⇒a=4
b=2x3⇒b=6