Dena uses 8.7 pints of white paint and blue paint paint her bedroom walls. 2/5 of this amount is white paint and the rest is blue paint how many pints of blue paint that she used to paint her bedroom walls? Need answer as decimal and fraction ASAP TYSM!!!

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days