Advertisements
Advertisements
Question
A car travels 90 km in 3 hours with constant speed. It will travel 140 km in 5 hours at the same speed
Options
True
False
Solution
False
Explanation;
Hint: 1 hour the car travels = `90/3` = 30 km
In 5 hours the car travels = 30 × 5 = 150 km
APPEARS IN
RELATED QUESTIONS
If a, b, c and d are in proportion prove that `sqrt((4a^2 + 9b^2)/(4c^2 + 9d^2)) = ((xa^3 - 4yb^3)/(xc^3 - 5yd^3))^(1/3)`
Find the mean proportion of the following :
24 and 6
Given four quantities p, q, r and s are in proportion, show that
q2(p - r) : rs (q - s) =(p2- q2- pq): ( r2-s2-rs).
Find two numbers whose mean proportional is 18 and the third proportional is 486.
Find the third proportional to 5, 10
If 24 workers can build a wall in 15 days, how many days will 8 workers take to build a similar wall?
If a, b, c and d are in proportion, prove that: (a4 + c4) : (b4 + d4) = a2 c2 : b2 d2.
If 2, 6, p, 54 and q are in continued proportion, find the values of p and q.
Find the missing number in the box in the proportions:
`square/18 = 2/9`
A student said that the ratios `3/4` and `9/16` were proportional. What error did the student make?
