Please help with the following questions:


1) Wendy has big and small chicken and duck eggs in her farm. She has 275 chicken eggs and 225 duck eggs. The ratio of big chicken eggs to small duck eggs is 5:2. The total number of big chicken eggs and big duck eggs is 300. find the total number of small chicken eggs in her farm.

2) Two buses X and Y left ABC interchange at 6.35 a.m. to pick up passengers. They travelled at an uniform speed in opposite directions round a 55 km circular route. Bus X took 50 minutes to complete each round. After every 30 minutes, the two buses would meet. At what time would the two buses meet at the interchange again?

Thank you.

tianzhu:

tech_nomax:

Pls help with these questions:

1) In March, the number of goldfish in an aquarium was 2/5 the number of angelfish. In April, some goldfish gave birth and its population increased by 80. In the same month, after month, after 50 angelfish died, there were 80% as many goldfish as angelfish. What was the difference between the number of goldfish and the number of angelfish left in the aquarium?

Hi

Please check phrase highlighted in pink.

Best wishes

Hi Tianzhu, thanks for helping.

1) In March, the number of goldfish in an aquarium was 2/5 the number of angelfish. In April, some goldfish gave birth and its population increased by 80. In the same month, after 50 angelfish died, there were 80% as many goldfish as angelfish. What was the difference between the number of goldfish and the number of angelfish left in the aquarium?

Pls help with these questions:

1) In March, the number of goldfish in an aquarium was 2/5 the number of angelfish. In April, some goldfish gave birth and its population increased by 80. In the same month, after 50 angelfish died, there were 80% as many goldfish as angelfish. What was the difference between the number of goldfish and the number of angelfish left in the aquarium?

2) At a farm, there were 360 more chickens than ducks. 3/5 of the chickens and 25% of the ducks were sold. In the end, there were 80 more ducks than chickens. How many chickens were there at the farm in the end?

MathIzzzFun:

tech_nomax:

At Station A, the ratio of the number of children to the number of adults on a train was 4:5. At the next station, 12 children alighted and 10 adults boarded the train. The ratio of the number of children to the number of adults on the train then became 7:10. How many children were on the train at first?

Hi

At first, Children : Adults --> 8u : 10u
In the end, Children : Adults --> 7u + 7 : 10u + 10
So, 8u - 12 = 7u +7
1u --> 19

Children, at first --> 8 x 19 = 152

cheers.

:thankyou: very much MathIzzzFun!

could you please let me know in line two, why to write
In the end, Children : Adults --> \"7u + 7 : 10u + 10\", instead of \"7u : 10u\".

Thanks in advance.

At Station A, the ratio of the number of children to the number of adults on a train was 4:5. At the next station, 12 children alighted and 10 adults boarded the train. The ratio of the number of children to the number of adults on the train then became 7:10. How many children were on the train at first?