Question

Divide 4840 into three parts proportional to 5:7:10

Answer 1

5x + 7x + 10 x = 4840
22x = 4840
x = 4840/22
x = 220
so by substituting ;)
5x = 5(220)
= 1100

7x = 7(220)
= 1540

10x = 10(220)
= 2200

so , the answer is ;)
The three parts that divide 4840 in the proportional to 5:7:10 are 1100 , 1540 , 2200.

Answer 2

ratio of three parts = 5:7:10
sum of the  three parts = 5+7+10 =22 parts
given that 
22 parts = 4840
1 part = 4840/22 =220

now required parts are

i) 5parts = 5* 220= 1100
ii) 7 parts = 7*220 =1540
iii) 10 parts = 10 *220 = 2200