https://www.cuemath.com/ncert-solutions/the-cost-of-4-pens-and-4-pencil-boxes-is-rs-100-three-times-the-cost-of-a-pen-is-rs-15-more-than-the-cost-of-a-pencil-box-form-the-pair-of-linear-equations-for-the-above-situation/
The cost of 4 pens and 4 pencil boxes is Rs 100. Three times the cost of a pen is Rs 15 more than the cost of a pencil box. Form the pair of linear equations...
pencil boxescostpens
https://www.officedepot.com/a/products/872706/Romanoff-Products-Pencil-Boxes-8-12H/
Romanoff pencil box can pack a lot of pencils.
romanoff productspencil boxesh