A pigeon ate 808 earthworms, in total, for 4 consecutive nights. Each night, he ate 38 earthworms more than the previous night. How many earthworms did the pigeon eat on the first night?

In a T20 cricket match, the first team has made 144 runs. If the second team has made 60 runs, then the ratio of the runs they have made to the runs they need to win the match is

Emershan bought a total of 19 hens and ducks. He got a discount of R0.90 for each hen and a discount of R 1.30 for each duck. He saved R20.30 in total. How many hens did he buy?