Question

find x if 30% of 400 + x% of 70 =25% of 536​

Answer 1

Step-by-step explanation:

#60% = 2 xx 30%

and

30% of

x

is 50

Therefore

2

×

30

=

60

%

of

x

is

2

×

50

=

100

60% of

x

is 100

Answer 2

Answer:

x≈0.1595

Step-by-step explanation:

given that, 30% of 400 + x% of 70 =25% of 536​

(30/100)400 + (x/100)70 = (25/100)536

simplifying,

120+7x/10=536/4

multiply by 10,

1200+7x=(536)5/2

2400+7x=(536)5

7x=2680/2400

x=(1.1166)/7

x≈0.1595