Use the distributivity of multiplication of rational numbers over their addition to simplify:
(i) 35×(3524+101)
(ii)−54×(85+165)
(iii)27×(716−214)
(iv)34×(89−40)
Find the mean of the following frequency distribution using step-deviation method. Class0−1010−2020−3030−4040−50Frequency71015810