Question

wearing a red ribbon. A red ribbon is worn by Isha. 2. Vivek is 3. Shabby is 4. Gurpreet is 5. Hamza is 6. Gabby is 7. Merry is 8. Aditi is 9. Piyush is 10.​

Answer 1

Answer:

An organ system is a group of organs that work together to perform one or more functions. Each organ has a specialized role in a plant or animal body, and is made up of distinct tissues.

Answer 2

A can do a work in 45 days. He works at it for 15 days and then, B alone finishes the remaining work in 24 days. Find the time taken to complete 80% of the work if they work together.

Solution:

A can do a work in 45 days.

A’s 1 day work = 145

∴ A’s 15 days work = 15 × 145 = 13

Remaining work = 1 – 13 = 23

B alone completes the remaining 23 work in 24 days

∴ B completes the whole work in 2423 days = 24 × 32 = 36 days.

∴ B’s 1 day’s work = 136

∴ (A + B)’s together complete the work in aba+b days = 45×3645+36 = 45×3681