The topics you should learn are equating denominators and fractions. This is summing up simple fractions.
So we have to make denominators' numbers the same in order to sum up them all (we can sum fractions if the denominators are the same) , and we did it by cross product (that thing on the picture)
Equating by lcm (least common multiple) is the easiest way, because you might see bigger numbers on other questions, and cross product will bring much bigger numbers, so this technic might confuse you.
By the way lcm of 4 and 5 is already 20
Hope it helps!
3/6x+9=8
3x+9=8
3x=-1
x= -1/3
The same line! hope this helps! i’m not 100% sure so if i’m wrong don’t flame me
The right answer is Option C.
Step-by-step explanation:
Given,
Smartphone sold = 1300000 units
Smartphones returned = 15%
No. of smartphones returned = 15% of smartphones sold
No. of smartphones returned =
No. of smartphones returned = 0.15*1300000 = 195000 units
As sales and return rate remains same, therefore,
Returns in 6 months = 6*per month returns
1170000 units will be returned to the company during 6 months.
The right answer is Option C.
Keywords: multiplication, return rate
Learn more about multiplication at:
#LearnwithBrainly
For the lateral area, don't include the base area. For the surface area, you should include it.
