Download App

Ratio and Proportion (Including Sharing in a Ratio) — MATHS STD 7 — Question

ICSE BoardEnglish MediumSTD 7MATHSRatio and Proportion (Including Sharing in a Ratio)3 Marks
Question
If m : n = 4 : 9 and n : s : 3 : 7, find m : s
✓

Answer


$\begin{aligned} & \mathrm{m}: \mathrm{n}=4: 9 \\ & \frac{\mathrm{m}}{\mathrm{n}}=\frac{4}{9} \\ & \text { and } \mathrm{n}: \mathrm{s}: 3: 7 \\ & \therefore \frac{\mathrm{n}}{\mathrm{s}}=\frac{3}{7} \\ & \therefore \frac{\mathrm{m}}{\mathrm{n}} \times \frac{\mathrm{n}}{\mathrm{s}}=\frac{4}{9} \times \frac{3}{7} \\ & \mathrm{~m}: \mathrm{s}=4: 21\end{aligned}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "[3 marks sum]" from Ratio and Proportion (Including Sharing in a Ratio)→Ratio and Proportion (Including Sharing in a Ratio) — all question types→MATHS STD 7 question papers→ICSE Board STD 7 question papers→ICSE Board question paper generator→

Similar questions

Find the mean of x + 3, x + 5, x + 7, x + 9 and x + 11.
→
Simplify: $3 \frac{3}{7} \div 1 \frac{1}{14}$
→
Draw a line segment AB = 5.2 cm. Draw a perpendicular to it from a point Poutside line AB by using : ruler and compasses
→
Evaluate: 0.8 × 1.2 × 0.25
→
If $m=9 x^2-4 x y+5 y^2$ and $n=-3 x^2+2 x y-y^2$ find: $m+2 n$
→
Subtract : $5 x^2-3 x y-7 y^2$ from $3 x^2-x y-2 y^2$
→
If $x$ is $20 \%$ less than $y$, find: $\frac{x}{y-x}$
→
Given below are the lengths of the sides of $\triangle A B C$. In each case, state whether $\triangle A B C$ is right angled or not :
(i) $AB =40 cm, BC =58 cm, CA =44 cm$
(ii) $AB =43 cm, BC =35 cm, CA =12 cm$
(iii) $AB =55 cm, BC =73 cm, CA =48 cm$
→
Check whether the following quantities form a proportion or not? $2 \frac{1}{2}, 5 \frac{1}{2}, 3.0$ and 6.0
→
Solve: p + 1.4p = 48
→