Physicians may soon have _____ to help paralyzed people move their limbs by bypassing the ____ nerves that once controlled their muscles. (1) instruments, detrimental (3) reason, involuntary (2) ways, damaged (4) impediments, complex

A train, an hour after starting meets with an accident which detains it for 30 minutes. after this the train proceeds at 3/4 of its former speed and arrives 3.5 hours late. Had the accident happened 90 km farther along the line, it would have arrived only 3 hours late. Find the length of the journey. (plz tell any short cut method)

A cuboidal tank of 30cmx20cmx12cm having water to the depth of 6cm. A metallic cube of 10cm was placed in the tank with one face placed on the bottom of the tank. Find the volume of water that should be poured in the tank for just submerging the metallic cube.

An employer reduce the number of employees in the ratio 9:8 and decrease their wages in the ratio 14:15.If the original wage bill was rs.18900 find the ratio in which wage bill decreased.Explain in detail plz

A and B rent a pasture for 10 months.. A puts in 100 cows for 8 months.How many cows can B put in for the remaining 2 months if he pays half as much as A?