The ratio of David's age to Sally's age is 3:4. In six years' time it will be 4:5.
Complete the sentence by filling in the gaps.
David is___
years old and Sally is
___years old.

Question 10jur's car can travel 340 miles on 12 gallons. jack's car can travel 390 miles on16 gallons. which person has the best mileage (miles per gallon) and what istheir mileage?

The weight v of an object on venus varies directly with its weight e on earth. a person weighing 120 lb on earth would weigh 106 lb on venus. how much would a person weighing 150 lb on earth weigh on venus?

What is the area of the original rectangle? 8 cm² 20 cm² 25 cm² 40 cm²