ICSE Class 9 Maths Simultaneous (Linear) Equations
A boat covers 32 km upstream and 36 km downstream in 7 hours, and 40 km upstream and 48 km downstream in 9 hours. Find the speed of the boat in still water.
Solve the following linear equations:
- Two numbers are in the ratio 4:7. Of thrice the larger be added to twice the smaller, the sum is 59. Find the numbers numbers.
- 3x+14y=5xy 21y-x=2xy Please tell how to do this question in equation reducible to pair of linear equations
- if the length and the breadth of the room are incrreased by 1meter,the area is increased by 21 sqare meters. if the length is increased by 1 meter and the breadth is decreased by 1 meter the area decreses by 5 sqare meters.find the perimeter of the room.
- A boat goes 30km upstream and 44km downstream in 10 hrs. In 13 hrs,it can go 40km upstream and 55km downstream. Determine the speed of the stream and that of the boat
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