Note 1 : All the persons worked on the job X for whole number days.
Note 2 : Two jobs Y and Z are similar to job X and require same effort as required by job X.
If the ratio of number of days for which B and D worked on job X is `4:3` , then find teh difference between of days for which B and D worked ?

Options

A. 2
B. 3
C. 1
D. 4

Answer

C

Explanation

Accrding to question,
`(2)/(10)+(4)/(12)+(3)/(15)+(3x)/(18)+(2)/(20)=1`
`rArr (1)/(5)+(x)/(3)+(1)/(1)+(1)/(5)+(x)/(6)+(1)/(10)=1`
`(6x+10x+6+5x+3)/(30)=1`
`15x15=30`
`x=1`
Required difference =`4x-3x`
`=4-3=1`