Question
Riordan spent 1 h 30 min on his Social studies Project. He spent another 40 min on his Mathematics project.
  1. How much time did he spend on both projects?
  2. How much longer did he spend on his Science project than his Mathematics project?
4 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

Riordan spent 1 h 30 min on his Social studies Project. He spent another 40 min on his Mathematics project.
  1. How much time did he spend on both projects?
  2. How much longer did he spend on his Science project than his Mathematics project?