x y z
30 45
lcm( 90)
3 2
opennig provedure
xz, yz, xz yz...........xz
90x70/100= 63 unit
x worked 8 hours = 24 unit
y works 7 hours= 14 unit
z works 15 hour= 63-38=25
15 hour me 25 unit
3 hour me 5
6 hour me 10 unit
increased by 50%
6 hours = 15 unit
total time taken by z = 6x6= 36 hours.✅✅✅
>>Click here to continue<<