Niki uses 15 litres of water every minute when she has a shower.
she uses 100 litres of water when she has a bath.
how many litres of water does she save by having a 3 1/2 minute shower instead of a bath?

Aplane is taking off from bangladesh headed to new york city. at the same time, a plane from new york city is headed to bangladesh is also taking off. the plane bound to new york city is traveling at 600 mph, while the plane traveling to bangladesh is traveling at 400 mph. how far from new york city will the two planes meet if the distance between new york city and bangladesh is 8,000 miles?