Question

At the beginning of a month a factory has enough material to make 240 tonnes of steel in a month. If 60 more tonnes of steel is to be made that month how long will the material last

Answer 1

answer is 1 1/4 months

Answer 2

let the material is m unit for 240 tonnes

then how much unit is required for 240 + 60 = 300 tonnes

requied material = 300m/240

requied material = 5m/4

extra required material = 5m/4 - m

= m / 4 units

if m --------. 100 %

then m/4 --------. ?

= 25 %


so 25% more units required