Maths olympiad Exam Numerical Ability

A MIXTURE OF A CERTAIN QUANITTY OF MILK WITH 16 LITRE OF WATER OF WATER WORTH 90PAISA PER LITRE. IF PURE MILK BE WORTH RS,. 1.08 PER LITRE HOW MUCH MILK IS THERE IN THE MIXTURE

Read Solution (Total 2)

.9*x +•9*16= 1.08 * x
=>.9x+14•4=1.08x
=>14.4=.18x
=>x=80 liter
9 years agoHelpfull: Yes(0) No(1)

through allegation formula, ratio is
water/milk=(1.08-0.9)/0.9=1/5
so for every 5 liter of milk there is 1 liter of water
so milk in 16 liter mixture=5/6*16=13.33 liter
7 years agoHelpfull: Yes(0) No(0)

Maths olympiad Other Question

150 workers were engaged to finish a piece of work in a certain number of
days. Four workers dropped the second day, four more workers dropped
the third day and so on. It took 8 more days to finish the work. Then find
the number of days in which the work was completed. A train 180m long, moving at 45km/hr crosses a second train 250m long coming in the opposite direction in 20 seconds. Find the speed of the second train.