The marked price of a car is $49500. A person can pay a deposit of 30% and simple interest at 12% annum is charged on the outstanding balance. The total amount payable is to be paid in 2.5 years. calculate: a). The amount of each instalment.
b). The hire purchase of the car.​

To keep cylindrical tanks from tipping over, a designer is planning to enlarge the original area of the base by 50%. the new tank should have the same volume as the original. how should the designer change the height of the tank? a: make it 50% taller than the height of the original tank. b: make it 6623% taller than the height of the original tank c: make it 3313% shorter than the height of the original tank d: make it 50% shorter than the height of the original tank.