Level 3 The product of two numbers is greater than 80 but less than 85. The sum of the two numbers is a multiple of 5. The difference between the two numbers is 8.
Level 3
Jonathan wants to purchase a new car which costs $134850. Jonathan will pay a monthly instalment over a period of 5 years after paying a downpayment of $12850. How much is each monthly instalment? Round your answer off to the nearest thousand.
Level 3
Two lighthouses flash their lights every 36 seconds and 30 seconds. If they flash together at 8:10 p.m., at what time would the two lighthouses flash their lights together again?
Level 3
Daryl was trying to sleep one night but there was too much noise around him. His clock ticked every 10 seconds, a tap was dripping every 12 seconds and his dog snored every 15 seconds. He noticed on his clock that all 3 things happened together at 11 p.m.
At what time would all 3 things happen together again?
How many times would all 3 things happen together again from 11 p.m. to 12 midnight?
