Step-by-step explanation:
x = n of years of mary
x+8= n of years of her bro
So her brother is (x+8)/x times as old as Mary
Answer:
510
divide into chunks. I divided it like how you would draw the equal sign.
for top chunk, 20*8=160
for 2nd chunk, 8*25=200
for the last chunk, 15*10=150
add up 160, 200, and 150
1626.24
You need to take the sample(2541) and divide it by the percentage so you would do 2541 x .64 =1626.24
x = 20 degree
Hope this helps u !!
